Find the length of the third side. If necessary, round to the nearest tenth.

Answer:
20
Step-by-step explanation:
a^2+b^2=c^2
15^2+b^2=25^2
225+b^2=625
b^2=400
Square root of 400 is 20
Answer:
20 or 29.2 but I think it's 20^^
Step-by-step explanation: