Question

total surface area of the cone whose radius is R divided by 2 and slant height is 2 l ​

Answer 1

Answer:

π r/2 (2l+ r/2)

Step-by-step explanation:

total surface of cone =πrl+πr(sqaure)

πr(l+r)

= π r/2(2l+r/2)

Answer 2

Step-by-step explanation:

radius radius of cone=R/2

slant height of cone=2L

TSA of cone=πr(r+l)

=πr/2(r/2+2l)

=πr/2(r+4l)/2

=πr/4(r+4l)