I thought it was 139, but apparently im wrong, can someone please help?

Mathematics

1 answer:

Oksanka [162]4 years ago

4 0

<h3>Answer: c = 29</h3>

Work Shown:

Use the pythagorean theorem

a^2+b^2 = c^2

21^2 + 20^2 = c^2

441 + 400 = c^2

841 = c^2

c^2 = 841

c = sqrt(841)

c = 29

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