# Louis

Louis wants to carpet the rectangular floor of his basement. The basement has an area of 5,120 square feet. The width of the basement is 4/5 its length. What is the length of Louis's basement?

### Correct answer:

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

**algebra**- equation
- system of equations
- expression of a variable from the formula
**arithmetic**- square root
**planimetrics**- area of a shape
- rectangle

#### Units of physical quantities:

#### Grade of the word problem:

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