Question

The slant height of a cone is 10 cm and the radius of its base is 7 cm. What is it curved surface area?

Answer 1

Radius of cone (r) = 7 cm
Slant height of cone (l) = 10 cm
Curved surface area of cone = πrl
$$\begin{gathered} =\frac{22}{7}\times 10\times 7 \\ =220\mathrm{Sq}\mathrm{cm} \end{gathered}$$