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The total surface area of a cone whos...

The total surface area of a cone whose radius is `(r)/(2)` and slant height 2l is

A

`2pir(l+r)`

B

`pi(l+r/4)`

C

`pir(l+r)`

D

`2pirl`

Text Solution

Verified by Experts

The correct Answer is:
D
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