......................................................

Skills involved: working as a team, measuring in imperial units (and converting feet and inches to a single unit), measuring an angle accurately, and doing the trigonometric calculation.

The method involves measuring a distance from the base of the tower using a tape, and then measuring the angle to the top of the tower with a clinometer. Here is the calculation the students did when they returned to the classroom:

The final answer also includes the height of the angle-measuring instrument.