Kalo ini rumusnya luas sama KELILINGNYA apa ya kak

<p>Karena gambarnya gak jelas saya akan coba jawab menggunakan penerawangan batin supaya ketemu sesuai yang diinginkan penanya.....</p><p>&nbsp;</p><p>3. <strong>Gambar setengan lingkaran dengan diameter 10 cm</strong></p><p>&nbsp; &nbsp; &nbsp;Keliling = Keliling ½ Lingkaran + Diameter</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (½ x 2 x 𝞹 x r) + d</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (𝞹 x r) + d</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (3,14 x 5) + 10</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 15,7 + 10</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 25,7 cm</p><p>&nbsp;</p><p>4. <strong>Gambar ¼ lingkaran dengan jari-jari (r) 14 cm</strong></p><p>&nbsp; &nbsp; &nbsp;Keliling = Keliling ¼ Lingkaran + diameter</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (1/4 x 2 x 𝞹 x r) + d</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (½ x 𝞹 x r) + d</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (½ x 22⁄7 x 14) + 28</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 22 + 28</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 50 cm</p><p>&nbsp;</p><p>5. <strong>Gambar ¾ lingkaran dengan jari-jari (r) 28 cm</strong></p><p>&nbsp; &nbsp; &nbsp; &nbsp;Keliling = Keliling ¾ Lingkaran + diameter</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (¾ x 2 x 𝞹 x r) + d</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (3⁄2 x 𝞹 x r) + d</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (3⁄2 x 22⁄7 x 28) + 56</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 132 + 56</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 188 cm</p><p>&nbsp;</p><p>Ingat!</p><ul><li>diameter (d) = 2 x r</li><li>𝞹 = 22⁄7 atau 3,14</li></ul>