1 Answer

Mehdi Ben Hamida · Answer 1 · 2021-12-31T02:54:50+0000

The answer is D.3
You would need to set up the pythagorean theorem
a^2+4^2=5^2
next you would have
a^2+16=25
now subtract 16 from both sides and you are left with
a^2=9
now take the square root of both sides
a=3

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