Diagonal 20
Diagonal pathway for the rectangular town plaza whose length is 20 m longer than the width. if the pathway is 20 m shorter than twice the width. How long should the pathway be?
Correct answer:

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You need to know the following knowledge to solve this word math problem:
- algebra
- quadratic equation
- system of equations
- expression of a variable from the formula
- planimetrics
- Pythagorean theorem
- right triangle
- triangle
- diagonal
- rectangle
Units of physical quantities:
Grade of the word problem:
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