# Rectangle

Calculate the area of the rectangle if its length is 12 cm longer than its width and length is equal to the square of its width.

### Correct answer:

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

**algebra**- quadratic equation
- expression of a variable from the formula
**planimetrics**- area of a shape
- rectangle

#### Units of physical quantities:

#### Grade of the word problem:

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