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26-01-2018
Mathematics

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A walkway forms one diagonal of a square playground. The walkway is 22 m long. How long is a side of the playground?

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26-01-2018

You can think of a square as two isosceles right angle triangles and use Pythagoras.

x^2 + x^2 = 22^2
x^2 + x^2 = 484
2x^2 = 484
x^2 = 242
x = 11√2

One side of the playground is 11√2 m long.

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