perbandingan rusuk'' balok adalah 2:3:5.jika jml panjang rusuk'' balok 120cm ,maka tentukan panjang rusuk rusuknya

→ Jumlah Rusuk = 4 (p + l + t)
120 = 4 (p + l + t)
30 = p + l + t
30 = 2x + 3x + 5x
30 = 10x
x = 30 / 10
x = 3

p = 2x = 2(3) = 6
l = 3x = 3(3) = 9
t = 5x = 5(3) = 15