Physics
posted by Mesha .
A high fountain of water is located at the center of a circular pool as in Figure P1.41. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 13.0 m. Next, the student stands at the edge of the pool and uses a protractor to gauge the angle of elevation at the bottom of the fountain to be 55.0°. How high is the fountain?

The pool radius is R = 13/(2*pi) meters
The fountain height is R*tan 55 
12.29m

answer is 3.0m