You can find this answer by simply doing the reverse of the Pythagorean Theorem. The formula for Pythagorean Theorem is a^2+b^2=c^2, so the reverse would be b^2=c^2-a^2. All we have to do is substitute in the numbers and solve.
b^2=c^2-a^2
b^2=36^2-32^2
b^2=272
sqrt(b^2) sqrt(272)
b=16.492
Since we are rounding to the nearest tenth, our answer will be 16.5 meters.