The cross-section of a ramp is a triangle with side lengths of 9 inches, 40 inches, and 41 inches. Is this a right triangle?

Answer: True.
Step-by-step explanation: For this to be true, then:
[tex]9^2+40^2(=?)41^2[/tex]
[tex]81+1600 (=?) 1681[/tex]
[tex]1681=1681[/tex]
Yes, the ramp is indeed a right triangle.