as you may know the hypotenuse is the longest side in a triangle. So using pythagoras theorem:
c = √(a² + b²)
Where:
c = Hypotenuse
a = adjacent side
b = opposite side
11, 1,4 Since 11 is the greater number
c = 11
the others will be a and b, the order does not matter
a=1
b=4
11 = √(1² + 4²