can you help me find the answer because it doesn't have details that is why I'm confuseddl

For this problem we can see that we have a right triangle given with two equal sides of 25 ft and we need to find the red one side
Since we have a right triangle we can use the Pythagoras theorem given by:
[tex]a^2+b^2=c^2[/tex]For this case a= b= 25 ft and if we replace we got:
[tex]25^2+25^2=c^2[/tex]c represent the red side ? if we solve for it we got:
[tex]c^2=1250[/tex]And we got:
[tex]c=\sqrt[]{1250}=\sqrt[2]{25^2\cdot2}=25\sqrt[]{2}[/tex][tex]c=25\sqrt[]{2}[/tex]