The diameter of a cone 14 cm and its slant height is 9cm . Find the area of its curved surface .

Answers (1)

Solution: We know that the area S of the curved surface of a right circular cone of radius r  and slant height l is given by 

                                    S= pi rl

Here ,                           r=frac142cm =7cm  and       l=9cm

	herefore                                S= frac227	imes7 	imes 9 cm^2= 198cm^2

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