How many shots each having diameter

Given, dimensions of cuboidal = 9 cm x 11 cm x 12 cm

∴ Volume of cuboidal = 9 x 11 x 12 = 1188 cm3

and diameter of shot = 3 cm

$\therefore \quad$ Radius of shot, $r=\frac{3}{2}=1.5 \mathrm{~cm}$

Volume of shot $=\frac{4}{3} \pi r^{3}=\frac{4}{3} \times \frac{22}{7} \times(1.5)^{3}$

$=\frac{297}{21}=14.143 \mathrm{~cm}^{3}$

$\therefore \quad$ Required number of shots $=\frac{1188}{14.143}=84$ (approx)