Question
The slant height of a right circular cone is 10 m and its height is 8 m. Find the area of its curved surface.
Answer: Option C
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l = 10 m,
h = 8 m.
So, r = l2 - h2 = (10)2 - 82 = 6 m.
So, Curved surface area = \(\pi rl = \left(\pi\times6\times10\right)m^{2}=60\pi m^{2}\)
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