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Yuliya22 [10]
2 years ago
15

To the Pythagorean Theorem

Mathematics
1 answer:
Aloiza [94]2 years ago
4 0

Answer:

x = 29

Step-by-step explanation:

c^{2} = a^{2} + b^{2}

c^{2} = 20^{2} + 21^{2}

c^{2} = 400 + 441

c^{2} = 841

\sqrt{c^2} = \sqrt{841}

c = 29

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