Question

Does anyone know the answer??

Answer 1

C

Explanation:

Use the Pythagorean Theorem.

`a^2+b^2=c^2 \\ \\ 100^2+b^2=125^2 \\ \\ 10000+b^2=15625 \\ \\ b^2=5625 \\ \\ b=√(5625) \\ \\ b=75`