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The radius and height of a cone are 20 c...

The radius and height of a cone are 20 cm and 21 cm respectively. The total surface area `(cm^2)` of the cone is :
किसी शंकु की त्रिज्या 20 cm तथा ऊंचाई 21 cm है, शंकु का कुल पृष्ठ क्षेत्रफल (`cm^2` में) है: `(pi=22/7)`

A

3080

B

3160

C

2920

D

3240

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