Question

Find the surface area of the solid. use 3.14 for π. write your answer as a decimal.

Answer 1

The surface area of the solid is 417.62 square inches

Explanation:

We have that the formula for the surface area of a cone is

`\begin{gathered} A=\pi\cdot r\cdot l+\pi\cdot r^2 \\ r=7 \\ l=12 \end{gathered}`

replacing:

`\begin{gathered} A=3.14\cdot7\cdot12+3.14\cdot7^2 \\ A=263.76+153.86 \\ A=417.62 \end{gathered}`