# Diameter 21173

The water ball has a volume of 32,500m². How big is its diameter?

### 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
**planimetrics**- area of a shape
**numbers**- fractions

#### Units of physical quantities:

#### Grade of the word problem:

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