Omg I did this like one month ago. Okay so first draw a square and mark 90 on each side. Then draw a diagonal line. You are left with 2 triangles. Now you have to do a2+ b2= c2
So 90 squared + 90 squared = c2
90 x 90= 8100 x 2 is equal to 16200.
16200= c2
The square root of 16200 is about 127.27 feet. That’s the answer