Question

Find the volume of a cube whose side is
(i) 4 cm (ii) 8 cm (iii) 1.5 dm (iv) 1.2 m (v) 25 mm

Answer 1

(i) Side of a cube (a) = 4 cm
$\therefore Volume=a^3=(4{)}^{3}c{m}^3$
= $4\times 4\times 4=64c{m}^3$
(ii) Side of a cube (a) = 8 cm
$\therefore Volume=a^3=(8{)}^3$
= $8\times 8\times 8c{m}^3=512c{m}^3$
(iii) Side of a cube (a) = 1.5 dm= 15 cm
$\therefore Volume=a^3=(1.5{)}^{3}d{m}^2=(15{)}^{3}c{m}^3$
= $15\times 15\times 15=3375c{m}^3$
(iv) Side of a cube (a) = 1.2 m= 120 cm
$\therefore Volume=a^3=(120{)}^{3}c{m}^3$
= $120\times 120\times 120=1728000c{m}^3$
(v) Side of a cube (a) = 25 mm= 2.5 cm
$\therefore Volume=a^3=(2.5{)}^{3}c{m}^3$
= $2.5\times 2.5\times 2.5c{m}^3=15.625c{m}^3$