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The surface area of a sphere of radius 5 cm is five times the area of curved surface of a cone of radius 4 cm. Find the height and volume of a cone. .

Asked by Topperlearning User 10th April 2014, 8:58 AM
Answered by Expert
Answer:

Surface area of sphere = 5 (CSA of cone)

4 l

4 25 = 5 4 l

l = 5 cm

We know,

h2 = l2 - r2

= 52 - 42

= 9

h = 3 cm

Volume of cone =

Answered by Expert 10th April 2014, 10:58 AM
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