Answer:
25
Explanation:
To find the length of a missing side of a triangle the formula is as follows:
a^2+b^2=c^2
For your situation a=7 and b=24 so it will look like this:
7^2+24^2 = c^2
This ends up equaling 625 so we know that c^2 = 625
After we solve this problem we figure out that the answer is 25.
Lets check our work:
25^2 = 625
So we were right!