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The height of a right circular cone is 5...

The height of a right circular cone is 5 cm and its base radius is 12 cm. What is the curved surface area of the cone?
एक लम्ब वृत्तीय शंकु की ऊंचाई 5 सेमी है तथा इसके आधार की त्रिज्या 12 सेमी है | इस शंकु का वक्र पृष्ठ क्षेत्रफल ज्ञात करें |

A

`132 pi cm^2`

B

`143 pi cm^2`

C

`156 pi cm^2`

D

`168 pi cm^2`

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