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What is the total surface area of a cone...

What is the total surface area of a cone which has a radius of 21 cm and a height of 28 cm? `(pi=22/7)`
उस शंकु का कुल पृष्ठ क्षेत्रफल ज्ञात करें जिसकी त्रिज्या 21 सेमी और ऊंचाई 28 सेमी है|

A

`3696 cm^2`

B

`1848 cm^2`

C

`5544 cm^2`

D

`7392 cm^2`

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