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  • Curved surface area of a con is 308 cm2 and its slant height is 14 cm. find (i) radius of the bases and(ii) total surface of the con

Curved surface area of a con is 308 cm2 and its slant height is 14 cm. find (i) radius of the bases and(ii) total surface of the con

Answers (1)

Slant height of the cone (l) = 14 cm.

Assume radius of the base is r.

$ Curved surface area $ = 308 \ cm^2 \\ \pi \times r \times l=308 \\\\ \frac{22}{7} \times r \times 14=308\\\\ r= 7cm \\ $ Total surface area $ = \pi \times r(r+l) \\ =\frac{22}{7} \times 7 (7+14)\\ =462 \ cm^2

Posted by

Ravindra Pindel

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