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OpenStudy (anonymous):
remind me the formula Suzy cut open a ball and found it was full of string. She knows the ball is 9 inches across. How much string is inside of the ball? 3.14 x 18?
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OpenStudy (blacksteel):
The equation you need here is the volume of a sphere, which is given by 4/3*pi*r^3
OpenStudy (blacksteel):
(The equation you used, 2*pi*r, is for the circumference of a circle)
OpenStudy (anonymous):
oh ok thank you yeah i was thinking too simple
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