Assignment:
In my latest battle with squirrels, I have strategically hung my bird feeder so that a squirrel cannot steal my birdseed. I attach string to a branch 15 feet off the ground and 3 feet from the trunk. If I attach the other end to a circular spool of radius 1 foot that 3 feet off of the ground and 10 feet away from the base of the tree. Determine how much string I need if I want to be able to raise and lower the feeder from the branch to the ground. How many times must I crank the wheel to raise the feeder from the ground to the top of the branch?
Provide complete and step by step solution for the question and show calculations and use formulas.