The radius of this ball is 15 inches. What equation gives the balls surface area in square inches?

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01-03-2019
Mathematics

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The radius of this ball is 15 inches. What equation gives the balls surface area in square inches?

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Express 15 degrees in Radian measure.

jdoe0001 jdoe0001 · Answer 1 · 2019-03-01T23:51:28+01:00

jdoe0001 jdoe0001

01-03-2019

[tex]\bf \textit{surface area of a sphere}\\\\ SA=4\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=15 \end{cases}\implies SA=4\pi 15^2\implies SA=900\pi ~in^2[/tex]

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