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OpenStudy (anonymous):
to find the volume of a balloon how am i suppost to find the radius ? i know it says find the circumference of the balloon first but im totally confused. is it supposed to be in inches.
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OpenStudy (jfraser):
If you assume the balloon is "perfectly" spherical, the circumference will be equal to \[C = 2 \pi r\] rearrange and solve for r, but do it in cm, not inches.
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