Math, asked by bSHAcaanaver3ma0, 1 year ago

The total surface area of a cone whose radius is r/2nd slant height 2l is what?

Answers

Answered by lekhahasa

2

T.S.A of cone=πr²+πrl
=π[(r/2)²+(r/2×2l)]
=π[(r²/4)+rl]
=π[(r²+4rl)/4]

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