Use the formula: a² + b² = c² in which:
c = hypotenuse
a = 11
b = 60
Plug in to corresponding areas
(11)² + (60)² = c²
121 + 3600 = c²
Combine
3721 = c²
Isolate the c. Root both sides
√3721 = c
c = 61
hope this helps