Sebuah balok memiliki luas sisi masing masing 30 cm2,18 cm2,dan 15 cm2 .volume balok itu adalah​

p × l = 30

p = 30/l

p × t = 18

p = 18/t

30/l = 18/t

30t = 18l

t = 18l/30

l × t = 15

l × 18l/30 = 15

18l² = 15 × 30

18l² = 450

l² = 450/18

l² = 25

l = √25

l = 5 cm —> lebar = 5 cm

l × t = 15

5 × t = 15

t = 15/5

t = 3 cm —-> tinggi = 3 cm

p × l = 30

p × 5 = 30

p = 30/5

p = 6 cm —-> panjang = 6 cm

volume balok adalah

v = p × l × t

v = 6 × 5 × 3

v = 90 cm³

jawaban nya : 90 cm³