Perbandingan antara panjang, lebar, dan tinggi sebuah balok adalah 5 : 4 : 3. jika volume balok 1.620 cm kubik, ukuran balok tersebut berturut-turut adalah..
Beta27
V = p x l xt 1.620 = 5y x 4y x 3y 1620 = 60y³ 1620 : 60 = y³ 27 = y³ ∛27 = y 3 = y
p = 5y = 5 x 3 = 15 cm l = 4y = 4 x 3 = 12 cm t = 3y = 3 x 3 = 9 cm
1.620 = 5y x 4y x 3y
1620 = 60y³
1620 : 60 = y³
27 = y³
∛27 = y
3 = y
p = 5y = 5 x 3 = 15 cm
l = 4y = 4 x 3 = 12 cm
t = 3y = 3 x 3 = 9 cm
p = 5y
l = 4y
t = 3y
V = p × l × t
1.620 = 5y × 4y × 3y
1.620 = 60y³
27 = y³
∛27 = ∛y³
3 = y
p = 5y
= 5(3)
= 15 cm
l = 4y
= 4(3)
= 12 cm
t = 3y
= 3(3)
= 9 cm
Jadi ukuran balok tersebut adalah ~> p × l × t = 15 cm × 12 cm × 9 cm.