suatu balok mempunyai perbandingan p:l:t=3:2:1. jika volumenya 384 cm³, berapakah ukuran panjang, lebar, tinggi balok tersebut!

p : l : t = 3 : 2 : 1
Misal :
p = 3x
l = 2x
t = x

Volume balok = 384 cm³
p x l x t = 384
(3x) (2x) (x) = 384
(3x) (2x²) = 384
6x³ = 384
x³ = 384/6
x³ = 64
x = ∛64
x = 4 cm

Panjang balok
= 3x
= 3 (4)
= 12 cm

Lebar balok
= 2x
= 2 (4)
= 8 cm

Tinggi balok
= x
= 4 cm

panjang = 3x
lebar = 2x
tinggi = x
V.balok = p x l x t
384 = p x l x t
384 = 3x . 2x . x
384 = 6 x³
384 : 6 = x³
64 = x³
x = 4

panjang = 3x = 3.4 = 12 cm
lebar = 2x = 2.4 = 8cm
tinggi = x = 4cm