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What is the surface area of this cone? Use a ~ 3.14 and round your answer to the nearest hundredth. 7 yd 6 yd square yards

What is the surface area of this cone? Use a ~ 3.14 and round your answer to the nearest-example-1
User D Hansen
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1 Answer

7 votes

Given:-


h=7,r=6

To find the surface area.

So now we use the formula,


A=\pi r(r+\sqrt[]{h^2+r^2})

So now we substitute so we get,


\begin{gathered} A=\pi6(6+\sqrt[]{7^2+6^2}) \\ A=\pi6(6+\sqrt[]{49+36}) \\ A=\pi6(6+\sqrt[]{85}) \\ A=6\pi(6+\sqrt[]{85}) \end{gathered}

So the required solution is,


A=6\pi(6+\sqrt[]{85})

User Bandara
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