Question

Find total surface area of cone whose radius is r/2and slant height is 2l​

Answer 1

Answer:

T.S.A of cone=πr(r+l)

put value=πr/2(r/2+2l)

=πr/2(r+4l)/2

=(πr^2+4πrl)/4

or

πr(r+4l)/4

hope this will right ans.