Question

Use a net to find the surface area of the cone to the nearest square centimeter. Use 3.14 for pi.

Answer 1

The surface area of the cone is given by:

$SA=\pi r^2+\pi Lr$

where r is the radius and L is slant height.

In this case r=5 and L=12. Then the surface area is:

$\begin{gathered} SA=(3.14)(5)^2+(3.14)(12)(5) \\ =267 \end{gathered}$

Therefore the surface area is 267 squared centimeters,