Respuesta :

121+3600=c²
3721=c²
c=61
The hypotenuse of the triangle is 61 feet
General formula to find hypotenuse is
c² = a² + b²
a and b is the side on the right angle, c is hypotenuse

Input the numbers
c² = a² + b²
c² = 60² + 11²
c² = 3,600 + 121
c² = 3,721
c = √3,721
c = 61

The hypotenuse is 61 feet