# Sphere volume formula

If V=4/3 π r

^{3}, find the value of V when r = 7, the value of r when V=113 1/7## Correct answer:

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### You need to know the following knowledge to solve this word math problem:

**algebra**- expression of a variable from the formula
**arithmetic**- cube root
- third power
**solid geometry**- sphere
- body volume

### Units of physical quantities:

### Grade of the word problem:

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