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# Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved surface area.

Given :
Radius (r) of the base of cone = $$\frac{10.5}{2} cm = 5.25$$ cm
Slant height (l) of cone = 10 cm

We know that, CSA of cone
= $${\pi}rl$$
= [$$\frac{22}{7} × 5.25 × 10$$ $${cm}^2$$]
= [$$22 × 0.75 × 10$$ $${cm}^2$$]
= 165 $${cm}^2$$

Therefore, the curved surface area of the cone is 165 $${cm}^2$$.