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serg [7]
2 years ago
9

Please help on this math question. Will be marked as BRAINLEST!

Mathematics
2 answers:
leonid [27]2 years ago
6 0

Answer:

20

Step-by-step explanation:

25 \times 25 - 15 \times 15 = 400

\sqrt{400}  = 20

emmainna [20.7K]2 years ago
3 0

Answer:

b=√400

=20

Step-by-step explanation:

15^2+b^2=25^2

225 + b^2=625

b^2=625-225

b^2=400

b=√400

b=20

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