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Diameter of the base of a cone is 9.9 cm and its slant heightis 9 cm. Find its curved surfacearea. |
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Answer» - diameter of BASE of a CONE (D) = 9.9cm :- slant height of a cone = 9cm :- RADIUS of cone = D/2 = 9.9/2 = 4.95 cmto find:-. curved surface AREA of cone solution:- = curved surface area of cone = 2πr + πrl =2×22/7 + 22/7×4.95×9 =6.28 + 3.14×4.95×9 =6.28 + 139.88 =146.16 cm*2 = curved surface of cone = 146.16 cm*2 |
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