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The radius of the base of a right circul...

The radius of the base of a right circular cylinder is 3 cm and its curved surface area is `60 pi cm^2` . The volume of the cylinder (in`cm^3`) is :
एक लम्ब वृत्तीय बेलन के आधार की त्रिज्या 3 सेमी है तथा इसका वक्र पृष्ठ क्षेत्रफल `60 pi` वर्ग सेमी है | इस बेलन का आयतन होगा:

A

`81 pi`

B

`90 pi`

C

`72 pi`

D

`60 pi`

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