The curved surface area of a hollow cylinder whose height is 14 cm and radius is 8 cm is _____ cm².

Radius, r = 8 cm

Height, h = 14 cm

Curved surface area of the cylinder = 2πrh

$$\begin{gathered} =2\times \frac{22}{7}\times 8\times 14 \\ =704 {\mathrm{cm}}^2 \end{gathered}$$

Thus, the curved surface area of the cylinder is 704 cm².