Problema Solution
A dog is attached to a stake in the yard by a leash that is 18 feet long. If the leash is stretched as far as it can go, how far would the dog run if it made one complete revolution around the stake?
Answer provided by our tutors
let
r = 18 ft
the dog made one complete revolution around the stake means he traveled the length of a circle with radius r:
P = 2 r pi
P = 2 * 18 * 3.14
P = 113.04 ft
the dog ran 113.04 ft.