Tolong di bantu ya besok dikumpulkan

<p>Diketahui :</p><ul><li>Perbandingan p : l : t = 4 : 3 : 1</li><li>V = 324 cm³</li></ul><p>&nbsp;</p><p>Mari kita bahas pertanyaannya ....</p><p>a. <strong>Menentukan panjang (p), lebar (l) dan tinggi (t)</strong></p><p>&nbsp; &nbsp; &nbsp;Misalkan dibelakang perbandingannya kita beri variabel a</p><p>&nbsp; &nbsp; &nbsp;V = p x l x t</p><p>&nbsp; &nbsp; &nbsp;324 = 4a x 3a x a</p><p>&nbsp; &nbsp; &nbsp;324 = 12a³</p><p>&nbsp; &nbsp; &nbsp;324 : 12 = a³</p><p>&nbsp; &nbsp; &nbsp;27 = a³</p><p>&nbsp; &nbsp; &nbsp;a = 3</p><p>&nbsp; &nbsp; &nbsp; Panjang = 4a = 4(3) =<strong> 12 cm</strong></p><p>&nbsp; &nbsp; &nbsp; Lebar = 3a = 3(3) =<strong> 9 cm</strong></p><p>&nbsp; &nbsp; &nbsp; Tinggi = a = <strong>3 cm</strong></p><p>&nbsp;</p><p>b. Luas alas = p x l</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 12 x 9</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=<strong> 108 cm²</strong></p><p>&nbsp;</p><p>c. Panjang rusuk = 4 x (p + l + t)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 4 x (12 + 9 + 3)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 4 x 24</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= <strong>96 cm</strong></p><p>&nbsp;</p><p>d. Luas permukaan = 2 x (pxl + p x t + l x t)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 2 x (12 x 9 + 12 x 3 + 9 x 3)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 2 x (108 + 36 + 27)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 2 x 171</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =<strong> 342 cm²</strong></p><p>&nbsp;</p>