# Extending square garden

Mrs. Petrová's garden had a square shape with a side length of 15 m. After its enlargement by 64 m

^{2}(square), it had the form of a square again. How many meters has the length of each side of the garden been extended?### Correct answer:

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

**algebra**- expression of a variable from the formula
**arithmetic**- square root
- square (second power, quadratic)
- addition
- subtraction
**planimetrics**- area of a shape
- square

#### Units of physical quantities:

#### Grade of the word problem:

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