Question

Find the  curved surface area whose height is 15 cm and the radius of the base is 7 cm.

Answer 1

\[ \text{ Given: } \]
\[\text{ Height, h = 15 cm } \]
\[ \text{ Radius, r = 7 cm } \]
\[\text{ Curved surface area, }  S_1 = 2\pi rh\]
\[ = 2 \times \frac{22}{7} \times 7 \times 15\]
\[ = 660 {\text{ cm } }^2 \]