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# The volume of a right circular cone is 9856 cm cube. If the diameter of the base is 28 cm, find (iii) curved surface area of the cone

Q : 7    The volume of a right circular cone is $\small 9856\hspace{1mm}cm^3$. If the diameter of the base is 28 cm, find

(iii) curved surface area of the cone

Views

Given, a right circular cone.

The radius of the base of the cone = $r = \frac{28}{2} = 14\ cm$

And Slant height of the cone =  $l = 50\ cm$

(iii) We know,

The curved surface area of a cone = $\pi r l$

$\therefore$ Required curved surface area= $\frac{22}{7}\times14\times50$

$\\ = 22\times2\times50 \\ = 2200\ cm^2$

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