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## rtraylor3 3 years ago If the amount of air in a spherical balloon is 288 pi cu. in., what is the radius if half the air is let out? The answer must be in cube root form.

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1. BTaylor

$V = \frac{4}{3}\pi r^{3}$ so solve for r if V=288pi/2=144pi $144 \pi = \frac{4}{3} \pi r^3$$144 = \frac{4}{3}r^{3}$$108=r^{3}$$r=\sqrt[3]{108}$

2. rtraylor3

You just saved me!! I would give you 50 medals if I could! Thanks <3

3. BTaylor

no problem.

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