The diameter of the base of a cylinder is 4 cm and its height is 14 cm.

(a) 176 cm3

Volume of the cylinder $=\pi r^{2} h$

$=\left(\frac{22}{7} \times 2 \times 2 \times 14\right) \quad\left[d=4 \mathrm{~cm} \Rightarrow r=\frac{4}{2} \mathrm{~cm}=2 \mathrm{~cm}\right]$

$=176 \mathrm{~cm}^{3}$