Aptitude - Volume and Surface Area - Discussion
Discussion Forum : Volume and Surface Area - General Questions (Q.No. 8)
8.
The slant height of a right circular cone is 10 m and its height is 8 m. Find the area of its curved surface.
30
m2
m240 m2
m260 m2
m280 m2
m2Answer: Option
Explanation:
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.
Discussion:
11 comments Page 2 of 2.
Viveka Shahi said:
1 decade ago
But R is not radius. It is diameter of the right circular cone.
So answer should be [A].
So answer should be [A].
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