Penjelasan dengan langkah-langkah:

1. dik = p = 35 cm l = 25 cm t= 20 cm

a. V = p × l × t

V = 35 × 25 × 20

V = 17 500 cm³

b. L = 2 x ( p.l + l.t + p.t)

L = 2 × (35.25 + 25.20 + 35.20)

L = 2 x ( 875 + 500 + 700)

L = 2 x (2075)

L = 4150 cm²

2. dik s = 30 cm

a. V = s x s x s

V = 30 x 30 x30

V = 27000 cm³

b. L = 6 x s x s

L = 6 x 30 x 30

L = 5400 cm²

3. Dik P = 30cm l = 20 cm t= 20cm

s = 10cm

Vkardus = p x l x t

vkardus = 30 x 20 x20

vkardus = 12000cm³

vrubik = s x s x s

vrubik = 10 x 10 x 10

vrubik = 1000cm³

vkardus / vrubik = 12000/1000 = 12rubik

jadi, rubik yg dapat dimasukkan ada 12 buah