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Q.

What is the volume of a cylinder?


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a

2πr(r+h)

b

2πr(2r+h)

c

2πr(r+2h)

d

πr2h 

answer is D.

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Detailed Solution

We know that the volume of the cylinder is πr2h.
The total surface area of the cylinder is 2πr(r+h).
The curved surface area of the cylinder is 2πrh.
So the volume of the cylinder is πr2h.
So, option 4 is correct.
 
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