Jawabanmu

2014-06-02T13:00:05+07:00
Panjang = 5/60 × 1.620 = 135 Lebar = 4/60 × 1.620 = 108 Tinggi = 3/60 × 1.620 = 81
kak kok panjangnya = 135 bukannya 15 cm ?
2014-06-02T15:52:34+07:00
V balok = p . l . t
1.620 = 5x . 4x . 3x
1.620 = 60 x³
x³ = 1620 / 60
x³ = 27
x =  \sqrt[3]{27}
x = 3

panjang = 5x = 5(3) = 15 cm
lebar = 4x = 4(3) = 12 cm
tinggi = 3x = 3(3) = 9 cm