Find the length of the third side. If necessary, round to the nearest tenth.

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Kona asked Feb 20, 2023

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2 votes

Find the length of the third side. If necessary, round to the nearest tenth.

Mathematics
high-school

Kona asked Feb 20, 2023

by Kona

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2 Answers

25 votes

Answer: 17.9

Explanation:

a = 11
c = 21
b = ?

$a^(2) +b^(2) =c^(2) \\b^(2)=c^(2)-a^(2) =21^2-11^2=441-121=320\\b=√(320) =17.8885438$

Rounded to the nearest tenth would be 17.9.

Rajaraman answered Feb 20, 2023

by Rajaraman

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17 votes

Answer: 17.9

Explanation:

MrDracow answered Feb 23, 2023

by MrDracow

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