Question

anthony is designing a circular ice skating rink, he wants to build the rink so that 12 laps around the outside rail will equal a distance of 1 mile. to the nearest foot, what length should he use for the radius of the rink? (hint: 1 mile = 5280ft

Answer 1

so the circumference times 12 = 1 mile

Answer 2

circumference = 2 x pi x radius

Answer 3

circumference therefore = 1/12 of a mile

Answer 4

1/12 miles = 2 x pi x radius

Answer 5

but the answer is in feet, so do similar steps to that but use feet