I need help with #3. Please help. I have to show all work so please explain

asked Jun 2, 2022 54.3k views

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Answer:

a = 2

Explanation:

Use Pythagorean Theorem:

$a^2+b^2=c^2\\a^2+2.1^2=2.9^2\\a^2+4.41=8.41\\a^2=4\\√(a^2)=√(4)\\a=2$

Therefore, a is 2 meters.

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