Panjang, lebar, dan tinggi suatu balok berbanding sebagai 4 : 3 : 2. Jika luas alas balok itu 300 cm2, maka volum balok itu adalah
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P:l:t = 4:3:2 Misalkan p = 4x, l = 3x, t = 2x... L = 300cm2 L = pl = 4x . 3x = 300 cm2 =12x^2 = 300 cm^2 x^2 = 300/12 cm2 x^2 = 25 cm^2 x = 5 cm p = 20 cm, l = 15 cm, t = 10 cm. V = plt = 20 cm × 15 cm × 10 cm = 3.000 cm3
Misalkan p = 4x, l = 3x, t = 2x...
L = 300cm2
L = pl
= 4x . 3x = 300 cm2
=12x^2 = 300 cm^2
x^2 = 300/12 cm2
x^2 = 25 cm^2
x = 5 cm
p = 20 cm, l = 15 cm, t = 10 cm.
V = plt = 20 cm × 15 cm × 10 cm = 3.000 cm3