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Find the curved surface area of a right circular cone whose height is 15 cm and base radius is 8 cm. |
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Answer» Height of a right circular cone, h = 15 cm Radius of a right circular cone, r = 8 cm Slant height of the cone, \(l =\sqrt{r^2+h^2}\) \(l =\sqrt{8^2+15^2}\) \(l =\sqrt{64+225}\) \(l =\sqrt{289}\) l = 17 cm Curved surface area of a cone, C.S.A = πrl C.S.A = π × 8 × 17 C.S.A = 136 π cm2 Hence, the Curved surface area of a cone is 136 π cm2. |
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