# Millimeter 24231

Calculate the length of the wall diagonal of a cube with a volume of 7, 40 square meters. Express the result to the nearest millimeter.

### 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
**solid geometry**- cube
**planimetrics**- Pythagorean theorem
- right triangle
- square
- diagonal

#### Units of physical quantities:

#### Grade of the word problem:

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