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What is the length of the unknown leg in the right triangle?

What is the length of the unknown leg in the right triangle?-example-1
User Dan Belden
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By Pythagorean Theorem,
7^2 + a^2 = √85^2
49 + a^2 = 85
a^2 = 85-49
a^2 = 36
a= 6mm
User Logicalmind
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The answer to your question is A.) 6 mm
User Alexander Schutte
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