Choose the correct alternative answer for the following question. Find the curved surface area of a cone of radius 7 cm and height 24 cm.

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KollegeApply · Accepted Answer

Radius of the cone, r = 7 cm Height of the cone, h = 24 cm Let l be the slant height of the cone. l = $\sqrt$(r^2 + h^2) = \sqrt{7^2 + {24}^2} = $\sqrt$(49 + 576) = $\sqrt$(625) = 25 cm $\therefore$ Curved surface area of the cone = $\pi$ r l = $\frac{22}{7}$ $\times$ 7 $\times$ 25 = 550 cm2

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