Question

Refer to the figure below to answer the following questions. Round to the nearesttenth.12 in2 in.Find the surface area.100.5 in2O 75.4 in288.0 in 244.0 in?

Answer 1

The surface area of a cone is given by

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

Where 'r' denotes the radius of the base, and 'L' the slant height of the cone. In our cone, we have the following measures:

$\begin{cases}r=2in \\ L=12in\end{cases}$

Plugging those values in our formula, we get the following:

$A=\pi\times12\times2+(2)^2\pi=24\pi+4\pi=28\pi\approx88in^2$

And this is our answer. The surface area is 88in².