October's "Problem of the Month"

College Calculus

Student's Name:  __________________________________________

Date Due:  Tuesday October 31, 2017 (Turn in by October 26 if you want it counted on the 1st Marking Period.)
Remember: You must submit your solution on THIS printed page.

The rectangle shown in the diagram below has width 15 and length 20.  Find x, the length of the segment perpendicular to the diagonal.
You must show all supporting work.