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The height and the total surface area of a right circular cylinder are 4 cm and `8 pi sq.cm.` respectively. The radius of the base of cylinder is
एक लंबवृत्तिय बेलन की ऊँचाई और कुल पृष्ठिय क्षेत्रफल क्रमशः 4 से.मी, और 8 `pi` वर्ग से.मी. है। उस बेलन के आधार की त्रिज्या बताइए।

A

`(2sqrt(2)-2) cm`

B

`(2-sqrt(2)) cm`

C

2 cm

D

`sqrt(2) cm`

Text Solution

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The correct Answer is:
A
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