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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?

Refer to the figure below to answer the following questions. Round to the nearesttenth-example-1
User Phuthib
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1 Answer

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24 votes

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*12*2+(2)^2\pi=24\pi+4\pi=28\pi\approx88in^2

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

User Mfalade
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