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In a hollow cylinder, the sum of the ext...

In a hollow cylinder, the sum of the external and internal radii is 14 cm and the width is 4 cm. If its height is 20 cm, the volume of the material in it is

A

`560picm^(2)`

B

`1120picm^(3)`

C

`56pi`

D

`360pi`

Text Solution

Verified by Experts

The correct Answer is:
B
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