Answer:
Using Pythagorean theorem:
x = sqrt( 15^2 + 36^2) = 39
Answer: 39
Step-by-step explanation: Using the pythagorean theorem(a^2 + b^2 = c^2)
a=36, b=15, and c=x.
36^2 +15 ^2 =c^2
c^2=1521
Square root 1521 and get 39
