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
(i) The side of the given cube is $4 \mathrm{~cm}$.
$\therefore$ Volume of the cube $=(\text { side })^{3}=(4)^{3}=64 \mathrm{~cm}^{3}$
(ii) The side of the given cube is $8 \mathrm{~cm}$.
$\therefore$ Volume of the cube $=(\text { side })^{3}=(8)^{3}=512 \mathrm{~cm}^{3}$
(iii) The side of the given cube $=1.5 \mathrm{dm}=1.5 \times 10 \mathrm{~cm}=15 \mathrm{~cm}$
$\therefore$ Volume of the cube $=(\text { side })^{3}=(15)^{3}=3375 \mathrm{~cm}^{3}$
(iv) The side of the given cube $=1.2 \mathrm{~m}=1.2 \times 100 \mathrm{~cm}=120 \mathrm{~cm}$
$\therefore$ Volume of the cube $=(\text { side })^{3}=(120)^{3}=1728000 \mathrm{~cm}^{3}$
(v) The side of the given cube $=25 \mathrm{~mm}=\frac{25}{10} \mathrm{~cm}=2.5 \mathrm{~cm}$
$\therefore$ Volume of the cube $=(\text { side })^{3}=(2.5)^{3}=15.625 \mathrm{~cm}^{3}$