sebuah balok mempunyai perbandingan p : l : t = 3 : 2 : 1. jika luas permukaan balok 352 cm3. hitunglah volume balok

p = 3x
l = 2x
t = x

Lp = 2pl + 2pt + 2lt
Lp = 2(3x.2x) + 2(3x.x) + 2(2x.x)
Lp = 2(6x²) + 2(3x²) + 2(2x²)
Lp = 12x² + 6x² + 4x²
352 = 22x²
x² = 352/22
x² = 16
x = 4

p = 3x = 3(4) = 12
l = 2x = 2(4) = 8
t = x = 4

V = p x l x t
V = 12 x 8 x 4
V = 384 cm^3