Use a² + b² = c²
c = 60 (for it is opposite of the right angle, and so is the longest side)
a = 36
b = y
Plug into the equation
36² + y² = 60²
Simplify
y² + 1296 = 3600
Isolate the y, subtract 1296 from both sides
y² + 1296 (-1296) = 3600 (-1296)
y² = 3600 - 1296
y² = 2304
Isolate the y, root both sides
y² = 2304
√y² = √2304
y = √2304
y = 48
C)48 is your answer
hope this helps