Question

Instructions: Find the surface area of each figure. Round your answers to the nearest tenth, if necessary. 10 ft. 22.4 ft. Surface Area: Aft2

Answer 1

The radius of the cone is r=10 ft.

The slant height of the cone is l=22.4 ft.

The surface area of the cone is,

$\begin{gathered} SA=\pi r(r+l) \\ =\pi\times10\times(10+22.4) \\ =1017.87\approx1017.9ft^2 \end{gathered}$

Thus, the required surface area of the cone is 1017.9 square feet.