{"id":259981,"date":"2019-06-23T10:32:36","date_gmt":"2019-06-23T03:32:36","guid":{"rendered":"https:\/\/www.quipper.com\/id\/blog\/?p=259981"},"modified":"2023-02-07T15:25:32","modified_gmt":"2023-02-07T08:25:32","slug":"materi-persamaan-lingkaran-kelas-11","status":"publish","type":"post","link":"https:\/\/quipperhome.wpcomstaging.com\/mapel\/materi-persamaan-lingkaran-kelas-11\/","title":{"rendered":"Anak Kelas 11, Sudah Mendalami Materi Persamaan Lingkaran Belum?"},"content":{"rendered":"<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-260371\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Anak-Kelas-11-Sudah-Mendalami-Materi-Persamaan-Lingkaran-Belum.png\" alt=\"\" width=\"800\" height=\"533\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Anak-Kelas-11-Sudah-Mendalami-Materi-Persamaan-Lingkaran-Belum.png 800w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Anak-Kelas-11-Sudah-Mendalami-Materi-Persamaan-Lingkaran-Belum-768x512.png 768w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Anak-Kelas-11-Sudah-Mendalami-Materi-Persamaan-Lingkaran-Belum-585x390.png?crop=1 585w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Anak-Kelas-11-Sudah-Mendalami-Materi-Persamaan-Lingkaran-Belum-263x175.png?crop=1 263w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Anak-Kelas-11-Sudah-Mendalami-Materi-Persamaan-Lingkaran-Belum-300x200.png 300w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<blockquote><p>Lingkaran merupakan bangunan yang terbentuk dari garis lengkung yang dua ujungnya berjarak sama dari titik tetap (titik pusat lingkaran) bangunan tersebut. Nah, persamaan lingkaran ini dipelajari untuk menentukan jangkauan maksimum dalam lingkaran.<\/p><\/blockquote>\n<p>Hai Quipperian, bagaimana kabarnya? Semoga masih tetap sehat dan tambah semangat belajar ya. Jika membaca kata lingkaran, hal apa yang ada di benak Quipperian? Pasti terlintas Matematika, ya? Benar saja Quipperian, lingkaran menjadi bahasan hangat di dunia Matematika karena bentuknya yang unik.<br \/>\nDalam kehidupan sehari-hari pun Quipperian tidak bisa lepas dari lingkaran <em>lho<\/em>, misalnya saja roda sepeda, gelang, anting, permukaan gelas, dan masih banyak lainnya. Tidak hanya itu, jika Quipperian pernah melihat <em>output<\/em>kinerja radar, posisi objek yang diamati pasti akan ditampilkan dalam bentuk lingkaran dengan titik-titik koordinat tertentu.<br \/>\nNah, kira-kira bagaimana cara menentukan jangkauan maksimum radar? Untuk menentukannya, Quipperian cukup belajar tentang persamaan lingkaran, seperti yang akan dibahas oleh Quipper Blog kali ini.<\/p>\n<h2><strong>Pengertian Lingkaran<\/strong><\/h2>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-260361\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Anak-Kelas-11-Sudah-Mendalami-Materi-Persamaan-Lingkaran-Belum1-1.png\" alt=\"\" width=\"800\" height=\"533\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Anak-Kelas-11-Sudah-Mendalami-Materi-Persamaan-Lingkaran-Belum1-1.png 800w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Anak-Kelas-11-Sudah-Mendalami-Materi-Persamaan-Lingkaran-Belum1-1-300x200.png 300w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Anak-Kelas-11-Sudah-Mendalami-Materi-Persamaan-Lingkaran-Belum1-1-768x512.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><br \/>\nMenurut Quipperian, lingkaran itu apa sih? Lingkaran itu adalah garis lengkung yang kedua ujungnya berjarak sama dari titik tetap bangun tersebut. Titik tetap yang dimaksud adalah titik pusat lingkaran, sedangkan jarak antara ujung lingkaran dan titik pusat disebut jari-jari lingkaran.<\/p>\n<h2><strong>Persamaan Umum Lingkaran<\/strong><\/h2>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-260351\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Anak-Kelas-11-Sudah-Mendalami-Materi-Persamaan-Lingkaran-Belum2-1.png\" alt=\"\" width=\"800\" height=\"533\"><br \/>\nPersamaan umum lingkaran bisa Quipperian tentukan dengan sangat mudah. Perhatikan gambar berikut.<\/p>\n<div id=\"attachment_260231\" style=\"width: 182px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-260231\" class=\"size-full wp-image-260231\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-1-1.png\" alt=\"\" width=\"172\" height=\"176\"><p id=\"caption-attachment-260231\" class=\"wp-caption-text\">Sumber: Quipper Video<\/p><\/div>\n<p>Gambar di atas menunjukkan bahwa terdapat suatu lingkaran yang berpusat di titik C dengan koordinat (<em>a<\/em>,<em>b<\/em>) dan berjari-jari <em>r<\/em>. Jari-jari merupakan jarak antara titik C dan P. Misalkan titik P(<em>x,y<\/em>) terletak di keliling lingkaran, sehingga jarak titik P ke pusat lingkaran dirumuskan sebagai berikut.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260211\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-2-1-300x148.png\" alt=\"\" width=\"300\" height=\"148\"><br \/>\nPersamaan di atas merupakan persamaan lingkaran dengan pusat C(<em>a,b<\/em>) dan jari-jari <em>r<\/em>.<br \/>\nJika dijabarkan lebih lanjut, persamaan di atas akan menjadi:<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260221\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-3-1-300x123.png\" alt=\"\" width=\"300\" height=\"123\"><br \/>\nNah, persamaan (1) di atas merupakan persamaan umum lingkaran, dengan:<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260191\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-4-2-300x182.png\" alt=\"\" width=\"300\" height=\"182\"><br \/>\nDengan demikian, pusat dan jari-jari lingkarannya dinyatakan sebagai berikut.<\/p>\n<h3><strong>Titik pusat lingkaran<\/strong><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260201\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-5-2-300x80.png\" alt=\"\" width=\"300\" height=\"80\"><\/p>\n<h3><strong>Jari-jari lingkaran<\/strong><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260171\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-6-1-300x234.png\" alt=\"\" width=\"300\" height=\"234\"><br \/>\nUntuk mengasah kemampuan Quipperian tentang Persamaan Umum Lingkaran, simak contoh soal berikut ini ya!<\/p>\n<h2><strong>Contoh Soal 1<\/strong><\/h2>\n<p>Tentukan persamaan umum lingkaran yang berpusat di (-3,4) dan menyinggung sumbu-Y!<br \/>\n<strong>Pembahasan:<\/strong><br \/>\nPertama-tama, Quipperian gambarkan dahulu grafik lingkarannya, yaitu berpusat di (-3,4) dan menyinggung sumbu-Y!<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-260181\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-7-1.png\" alt=\"\" width=\"272\" height=\"271\"><br \/>\nBerdasarkan gambar di atas, terlihat bahwa pusat lingkarannya berada di koordinat (-3,4) dengan jari-jari 3, sehingga diperoleh:<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260141\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-8-2-300x208.png\" alt=\"\" width=\"300\" height=\"208\"><br \/>\nJadi, persamaan umum lingkaran yang berpusat di (-3,4) dan menyinggung sumbu-Y adalah&nbsp;<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260151\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-9-1-300x44.png\" alt=\"\" width=\"300\" height=\"44\"><br \/>\nPada beberapa kasus, jari-jari lingkarannya tidak diketahui, tetapi garis singgungnya diketahui. Lantas bagaimana menentukan jari-jari lingkarannya? Perhatikan gambar berikut.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-260091\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-10-1.png\" alt=\"\" width=\"189\" height=\"170\"><br \/>\nGambar di atas menunjukkan bahwa garis singgung dengan persamaan <em>px<\/em>+ &nbsp;<em>qy<\/em>+ <em>r<\/em>= 0 menyinggung lingkaran yang berpusat di C(<em>a,b<\/em>). Untuk jari-jarinya bisa Quipperian tentukan dengan persamaan berikut.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260131\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-11-2-300x100.png\" alt=\"\" width=\"300\" height=\"100\"><br \/>\nAgar Quipperian lebih paham tentang hubungan antara lingkaran beserta garis yang menyinggungnya, simak contoh soal 2 berikut ini.<\/p>\n<h2><strong>Contoh Soal 2<\/strong><\/h2>\n<p>Tentukan persamaan umum lingkaran yang berpusat di titik (5,1) dan menyinggung garis 3<em>x<\/em>\u2013 4<em>y<\/em>+ 4 = 0!<br \/>\n<strong>Pembahasan:<\/strong><br \/>\nJika diketahui pusat lingkaran (<em>a<\/em>,<em>b<\/em>) = (5,1) dan garis singgung lingkarannya 3<em>x<\/em>\u2013 4<em>y<\/em>+ 4 = 0, maka jari-jari lingkarannya dirumuskan sebagai berikut.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260111\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-12-1-284x300.png\" alt=\"\" width=\"284\" height=\"300\"><br \/>\nDengan demikian, persamaan umum lingkarannya adalah sebagai berikut.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260081\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-13-1-300x115.png\" alt=\"\" width=\"300\" height=\"115\"><br \/>\nJadi, persamaan umum lingkaran yang berpusat di titik (5,1) dan menyinggung garis 3<em>x<\/em>\u2013 4<em>y<\/em>+ 4 = 0 adalah&nbsp;<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260061\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-14-1-300x42.png\" alt=\"\" width=\"300\" height=\"42\"><\/p>\n<h2><strong>Hubungan Dua Buah Lingkaran<\/strong><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-260341\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Anak-Kelas-11-Sudah-Mendalami-Materi-Persamaan-Lingkaran-Belum3-1.png\" alt=\"\" width=\"800\" height=\"533\"><br \/>\nSebelumnya, Quipperian sudah belajar tentang titik pusat, jari-jari, serta persamaan umum untuk satu buah lingkaran. Bagaimana jadinya jika lingkarannya ada dua?<br \/>\nMisalnya, dua buah lingkaran L<sub>1<\/sub>dengan pusat C<sub>1<\/sub>, jari-jari <em>r<\/em><em>1<\/em>dan lingkaran L<sub>2<\/sub>dengan pusat C<sub>2<\/sub>, jari-jari <em>r<\/em><sub><em>2<\/em><\/sub>memiliki hubungan sebagai berikut.<\/p>\n<h3><strong>1. L<sub>1&nbsp;<\/sub>bersinggungan dalam dengan L<sub>2<\/sub><\/strong><\/h3>\n<p>Perhatikan gambar berikut.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-260041\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-15.png\" alt=\"\" width=\"106\" height=\"107\"><br \/>\nBerdasarkan gambar di atas, berlaku:<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260031\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-1-16-300x84.png\" alt=\"\" width=\"300\" height=\"84\"><\/p>\n<h3><strong>2. L<sub>1&nbsp;<\/sub>bersinggungan luar dengan L<sub>2<\/sub><\/strong><\/h3>\n<p>Perhatikan gambar berikut.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-260021\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-1-17.png\" alt=\"\" width=\"256\" height=\"195\"><br \/>\nBerdasarkan gambar di atas, berlaku:<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260011\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-1-18-300x83.png\" alt=\"\" width=\"300\" height=\"83\"><\/p>\n<h3><strong>3. L<sub>1&nbsp;<\/sub>di dalam L<sub>2 <\/sub>tanpa bersinggungan<\/strong><\/h3>\n<p>Perhatikan gambar berikut.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-260001\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-1-19.png\" alt=\"\" width=\"238\" height=\"236\"><br \/>\nBerdasarkan gambar di atas, berlaku:<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-259991\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-2-10-300x84.png\" alt=\"\" width=\"300\" height=\"84\"><\/p>\n<h3><strong>4. L<sub>1&nbsp;<\/sub>saling lepas dengan L<sub>2<\/sub><\/strong><\/h3>\n<p>Perhatikan gambar berikut.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260321\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-21-300x191.png\" alt=\"\" width=\"300\" height=\"191\"><br \/>\nBerdasarkan gambar di atas, berlaku:<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260311\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-22-300x84.png\" alt=\"\" width=\"300\" height=\"84\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-22-300x84.png 300w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-22-768x216.png 768w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-22-1024x288.png 1024w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-22.png 1885w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<h3><strong>5. L<sub>1&nbsp;<\/sub>berpotongan dengan L<sub>2<\/sub><\/strong><\/h3>\n<p>Perhatikan gambar berikut.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-260301\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-23.png\" alt=\"\" width=\"260\" height=\"210\"><br \/>\nBerdasarkan gambar di atas, berlaku:<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260291\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-24-300x53.png\" alt=\"\" width=\"300\" height=\"53\"><br \/>\nKelihatannya rumit ya Quipperian, tetapi jangan khawatir karena Quipper Blog akan memberikan SUPER \u201cSolusi Quipper\u201d untuk mengingat hubungan antara dua buah roda.<br \/>\nIni dia SUPERnya!<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-260281\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-25-2.png\" alt=\"\" width=\"530\" height=\"427\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-25-2.png 530w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-25-2-300x242.png 300w\" sizes=\"(max-width: 530px) 100vw, 530px\" \/><br \/>\nTidak hanya itu, SUPER juga akan hadir untuk membantu Quipperian dalam mengingat jarak pusat C<sub>1<\/sub>C<sub>2<\/sub>, <em>lho<\/em>.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-260271\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-26-2.png\" alt=\"\" width=\"523\" height=\"162\"><br \/>\nApakah Quipperian sudah paham tentang hubungan antara dua buah lingkaran? Jika belum, coba simak contoh soal 3 berikut ini ya!<\/p>\n<h2><strong>Contoh Soal 3<\/strong><\/h2>\n<p>Tentukan hubungan antara lingkaran&nbsp;<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260261\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-27-300x36.png\" alt=\"\" width=\"300\" height=\"36\">&nbsp;dengan&nbsp;<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260251\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-28-300x36.png\" alt=\"\" width=\"300\" height=\"36\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-28-300x36.png 300w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-28-768x92.png 768w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-28-1024x122.png 1024w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-28.png 1999w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<strong>Pembahasan:<\/strong><br \/>\nPertama-tama, Quipperian harus mencari pusat dan jari-jari kedua lingkaran tersebut.<br \/>\nJika ditinjau, lingkaran <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260261\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-27-300x36.png\" alt=\"\" width=\"300\" height=\"36\">&nbsp;memiliki nilai <em>A<\/em>= -10, <em>B<\/em>= 4, dan <em>C<\/em>= -167, sehingga pusat lingkarannya adalah<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260241\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-29-1-300x161.png\" alt=\"\" width=\"300\" height=\"161\"><br \/>\nJari-jari lingkarannya dirumuskan sebagai berikut.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260161\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-30-1-300x153.png\" alt=\"\" width=\"300\" height=\"153\"><br \/>\nJika ditinjau, lingkaran <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260251\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-28-300x36.png\" alt=\"\" width=\"300\" height=\"36\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-28-300x36.png 300w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-28-768x92.png 768w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-28-1024x122.png 1024w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-28.png 1999w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>&nbsp;memiliki nilai <em>A<\/em>= 6, <em>B<\/em>= -16, dan <em>C<\/em>= 57, sehingga pusat lingkarannya adalah<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260121\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-32-1-300x156.png\" alt=\"\" width=\"300\" height=\"156\"><br \/>\nJari-jari lingkarannya dirumuskan sebagai berikut.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260101\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-33-1-300x157.png\" alt=\"\" width=\"300\" height=\"157\"><br \/>\nSetelah itu, Quipperian bisa menentukan nilai&nbsp;<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260071\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-34-1-300x49.png\" alt=\"\" width=\"300\" height=\"49\"><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-260051\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/06\/Persamaan-Lingkaran-35-300x230.png\" alt=\"\" width=\"300\" height=\"230\"><br \/>\nOleh karena 10 &lt; \u221a164&nbsp;&lt; 18, maka lingkaran L<sub>1<\/sub>berpotongan dengan lingkaran L<sub>2<\/sub>.<br \/>\nJadi, hubungan antar kedua lingkaran pada soal adalah saling berpotongan.<br \/>\nSetelah membaca ulasan tentang persamaan lingkaran di atas, apakah Quipperian sudah semakin paham? Pada dasarnya, banyak penerapan yang bisa Quipperian gali setelah belajar tentang persamaan lingkaran ini, contohnya deteksi jangkauan radar, menentukan persamaan garis singgung pada hubungan roda-roda, menentukan persamaan lintasan pesawat tempur, dan masih banyak lainnya.<br \/>\nJika Quipperian masih ingin mempelajari persamaan lingkaran secara intensif, silahkan gabung dengan <a href=\"https:\/\/learn.quipper.com\/signup\"><strong>Quipper Video<\/strong><\/a>, ya. Selamat belajar dengan tutor-tutor kece Quipper Video dan temukan ratusan soal di dalamnya.<br \/>\n<strong>Sumber:<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/d14fikpiqfsi71.cloudfront.net\/media\/W1siZiIsIjIwMTYvMTAvMjEvMDIvMTYvMjAvNWY5MGExMTgtMTY2YS00ZTY3LWEzOWItZmE5M2E0OTBmMWZjL01hdGVtYXRpa2FLMTFTMTMtRmluYWwucGRmIl1d.pdf?sha=cf20d6db9a86e6b1\">https:\/\/d14fikpiqfsi71.cloudfront.net\/media\/W1siZiIsIjIwMTYvMTAvMjEvMDIvMTYvMjAvNWY5MGExMTgtMTY2YS00ZTY3LWEzOWItZmE5M2E0OTBmMWZjL01hdGVtYXRpa2FLMTFTMTMtRmluYWwucGRmIl1d.pdf?sha=cf20d6db9a86e6b1<\/a><\/li>\n<\/ul>\n<p><strong>Penulis: Eka Viandari<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Lingkaran merupakan bangunan yang terbentuk dari garis lengkung yang dua ujungnya berjarak sama dari titik tetap (titik pusat lingkaran) bangunan tersebut. Nah, persamaan lingkaran&hellip;<\/p>\n","protected":false},"author":99400369,"featured_media":260371,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[679384888,679384865],"tags":[679384518],"ppma_author":[679386827,679386836],"class_list":["post-259981","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mapel","category-matematika","tag-matematika-kelas-11"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Anak Kelas 11, Sudah Mendalami Materi Persamaan Lingkaran Belum?<\/title>\n<meta name=\"description\" content=\"Quipperian, sudah tahu belum tentang persamaan lingkaran? 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