Dari suatu balok diletahui:panjang=5X cm, lebar=3X cm, tinggi=4X cm.Jika volume balok tersebut= 480 cm3, tentukan: a. Panjang, lebar, dan tinggi balok! b. Luas balok tersebut!
armiliyana
A. volume = p × l × t 480 = 5x × 3x × 4x 480 = 60x³ x³ = x³ = 8 x = x = 2 ⇒p = 5x = 5 × 2 = 10 cm l = 3x = 3 × 2 = 6 cm t = 4x = 4 × 2 = 8 cm
b. Luas = 2 = 2 = 2 × 188 = 376 cm²
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Qudhiet01P . L . T = Volume Balok ( 5x . 3x . 4x ) cm = 480 cm³ 60x³ cm = 480 cm³ x³ = 480 / 60 = 8 x = ∛8 = 2
a.) => Panjang = 5x = 5 (2) = 10 cm => Lebar = 3x = 3 (2) = 6 cm => Tinggi = 4x = 4 (2) = 8 cm
480 = 5x × 3x × 4x
480 = 60x³
x³ =
x³ = 8
x =
x = 2
⇒p = 5x = 5 × 2 = 10 cm
l = 3x = 3 × 2 = 6 cm
t = 4x = 4 × 2 = 8 cm
b. Luas = 2
= 2
= 2 × 188
= 376 cm²
( 5x . 3x . 4x ) cm = 480 cm³
60x³ cm = 480 cm³
x³ = 480 / 60
= 8
x = ∛8 = 2
a.) => Panjang = 5x = 5 (2) = 10 cm
=> Lebar = 3x = 3 (2) = 6 cm
=> Tinggi = 4x = 4 (2) = 8 cm
b.) Luas Permukaan Balok = 2 ( P.L + P.T + L.T )
= 2 ( 10.6 + 10.8 + 6.8 )
= 2 ( 60 + 80 + 48 )
= 2 ( 188 )
= 376 cm²