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The diameter of the base of a right circ...

The diameter of the base of a right circular cone is 10 cm and its height is 12 cm. What is the total surface area (in `cm^2`) of the cone?
एक लम्ब वृत्तीय शंकु के आधार का व्यास 10 सेमी है तथा इसकी ऊंचाई 12 सेमी है | इस शंकु का कुल पृष्ठ क्षेत्रफल ( वर्ग सेमी में ) कितना है ?

A

`90 pi`

B

`70 pi`

C

`84 pi`

D

`65 pi`

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