Perbandingan p:l:t suatu balok = 5:3:2 .Jika volume balok 240cm².Hitunglah a.ukuran balok b.Lp balok

5x . 3x . 2x = 240
30x³ = 240
x³ = 240 / 30
x³ = 8
x = 2

A. Ukuran Balok
p = 5x = 5(2) = 10 cm
l = 3x = 3(2) = 6 cm
t = 2x = 2(2) = 4 cm

B. Luas Permukaan

Lp = 2pl + 2pt + 2lt
Lp = 2(10)(6) + 2(10)(4) + 2(6)(4)
Lp = 120 + 80 + 48
Lp = 248

misal : p= 10
l = 6
t = 4
p×l×t = 240
a. ukuran balok
p = 10
l = 6
t = 4
b. lp balok = 2.p.l + 2.p.t + 2.l.t
= 2.10.6 + 2.10.4 + 2.6.4
= 120 + 80 + 48
= 248