SOLUTION: Mary walks 20m diagonally across a rectangular field. She then returns to her starting position along the outside field. The total distance she walks is 48m. What are the dimension

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Question 1103559: Mary walks 20m diagonally across a rectangular field. She then returns to her starting position along the outside field. The total distance she walks is 48m. What are the dimensions of the field?
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!

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Mary walks 20m diagonally across a rectangular field. She then returns to her starting position along the outside field. The total distance she walks is 48m.
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d, diagonal
x and y dimensions

x%5E2%2By%5E2=d%5E2
x%2By%2Bd=48
x%2By=48-20
x%2By=28
-
x%5E2%2By%5E2=20%5E2
x%5E2%2By%5E2=400

If you can solve this system by yourself, then you will be fine:
system%28x%2By=28%2Cx%5E2%2By%5E2=400%29