Question

Find the total surface area of whose radius is r/2 and slant hight is 2r

Answer 1

total surface area of cone =πrl=>22/7*r/2*2r
=πr^2

this answer is useful

Answer 2

Answer

curved surface area of a cone is 2*22/7*r/2*2r =44r^2/7

bottom surface area 22/7*(r/2)^2