Answer:
85 ft
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides.
let h be the hypotenuse, then
h² = 40² + 75² = 1600 + 5625 = 7225 ( take the square root of both sides )
h = [tex]\sqrt{7225}[/tex] = 85
