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The radius of this ball is 24 inches. Which equation gives the ball's surface area, in square inches?
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The radius of this ball is 24 inches. Which equation gives the ball's surface area, in square inches?

User Alex Martian
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A ball is a sphere, which means it uses the following equations:

V=4/3pi•r^3
SA=4pi•r^2

The equation would be SA=4pi•r^2.

In this case, the ball has a surface area of 576pi, or 1,809.6 square inches.
User Hoppe
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