SOLUTION: The volume of a sphere is 288 pi cm tripled . Find the lenght of a radius of a SPHERE.What is the answer and how did you do it? help me please .

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Question 272261: The volume of a sphere is 288 pi cm tripled . Find the lenght of a radius of a SPHERE.What is the answer and how did you do it? help me please .
Found 2 solutions by Alan3354, Earlsdon:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The volume of a sphere is 288 pi cm tripled . Find the lenght of a radius of a SPHERE.What is the answer and how did you do it?
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The volume of a sphere of radius r is:
V+=+4%2Api%2Ar%5E3%2F3
It's r cubed, not tripled. meaning r*r*r
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288pi+=+4%2Api%2Ar%5E3%2F3
864+=+4r%5E3
r%5E3+=+216
r = 6 cm

Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
The volume of a sphere is given by:
V+=+%284%2F3%29%28pi%29r%5E3 Substitute V+=+%28288%29%28pi%29
288%28pi%29+=+%284%2F3%29%28pi%29r%5E3 Divide both sides by pi
288+=+%284%2F3%29r%5E3 Multiply both sides by the multiplicative inverse of 4%2F3 which is 3%2F4.
216+=+r%5E3 Take the cube root of both sides.
highlight%28r+=+6%29cm.