What is the length of the unknown side of the right triangle? A. 21 B. 29 C. 400 D. 441

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Zhongyu Kuang asked Sep 12, 2023

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42 votes

What is the length of the unknown side of the right triangle?

A. 21
B. 29
C. 400
D. 441

What is the length of the unknown side of the right triangle? A. 21 B. 29 C. 400 D-example-1

Mathematics
high-school

Zhongyu Kuang asked Sep 12, 2023

by Zhongyu Kuang

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6 votes

Answer:

the answer is 29

Mrks answered Sep 13, 2023

by Mrks

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25 votes

Answer:

Explanation:

Using Pythagoras' identity in the right triangle

x² = 20² + 21² = 400 + 441 = 841 ( take square root of both sides )

x =
√(841) = 29

SynCap answered Sep 17, 2023

by SynCap

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