How to find the surface area of a cone - ISEE Upper Level Mathematics Achievement

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Question

What is the surface area of a cone with the following measurements?

Answer

The surface area of a cone can be found with the following equation:

$SA=\frac{1}{2}h+r^2\pi$

$SA=\frac{1}{2}(10)+4^2\pi=5+16\pi$

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