A cylindrical well of depth 21 m with internal radius of 13 m is dug up. The mud, so detained, is spread evenly to form a platform of dimension 52 13.2. What is the height of the platform?

A cylindrical well of depth 21 m with internal radius of 13 m is dug u

1.	A cylindrical well of depth 21 m with internal radius of 13 m is dug up. The mud, so detained, is spread evenly to form a platform of dimension 52 13.2. What is the height of the platform?
A.	62.5 m
B.	37.5 m
C.	13.4 m
D.	18.2 m
Answer» C. 13.4 m

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A cylindrical well of depth 21 m with internal radius of 13 m is dug up. The mud, so detained, is spread evenly to form a platform of dimension 52 13.2. What is the height of the platform?

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