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1. The slant height of a right circular cone is 10 m and its height is 8 m. Find the area of its curved surface.
(A): 30 m2
(B): 40 m2
(C): 60 m2
(D): 80 m2
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By: guest on 01 Jun 2017 05.49 pm
l = 10 m, h = 8 m. So, r = l2 - h2 = (10)2 - 82 = 6 m. Curved surface area = rl = ( x 6 x 10) m2 = 60 m2.
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