CBSE BOARD X, asked by Lokesk813, 11 months ago

What is the total surface area of a cone having radius is r/2 and height 2l ?

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Answered by mamtasuman79
2

given

slant height = 2l

radius = r/2

total surface area of the cone = 2π*radius(radius+slant height)

=2π*r/2[r/2+2l]

=πr{r+4l}/2 sq units

Answered by nazishhakhter31
1

Hope it helps...

Step by step explanation....

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