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.
Nikita said:
8 years ago
L = 10 m.
H = 8 m.
R = (10 * 10) - (8 * 8).
R = 100 - 64 = 36.
Square root of 36 is 6.
= 6 * 10 = 60m.
H = 8 m.
R = (10 * 10) - (8 * 8).
R = 100 - 64 = 36.
Square root of 36 is 6.
= 6 * 10 = 60m.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers