Question

Find the surface area of the cone in terms of pie if the radius is 7 n the side is 10

Answer 1

The surface area of a cone is the sum of the area of its circular base and the lateral area.

... S = πr² +πrh = πr(r+h) . . . . . for radius r and slant height h

Filling in the given numbers, you get

... S = π·7·(7+10) = 119π

The surface area is 119π square units.