Question

find surface area of a cone in terms of its radius when height is equal to radius?

Answer 1

Answer:

Step-by-step explanation:

A=πr(r+h2+r2)

Answer 2

Answer:

Surface Area=π×r^2(1+√2)

Step-by-step explanation:

surface area of cone =area of base circle+ area of curved surface

=πr^2+πrl where l is slant height and r is radius

l=√h^2+r^2

now in this h is height which equal to r then SA become

SA=πr^2+πrl=πr^2+πr√(h^2+r^2)=πr^2+πr√(r^2+r^2)=πr^2(1+√2)

SA=πr^2(1+√2)