Question

A measuring wheel is used to find the perimeter of a rectangular playground. The wheel makes 4,122 complete rotations.



If the diameter of the wheel is 12", what is the perimeter of the playground to the nearest foot?

A.
1,079 ft.

B.
16,187 ft.

C.
12,950 ft.

D.
155,396 ft.

Answer 1

Diameter = 12 inches
Circumference = PI * 12 =  37.6991118431
Circumference =  37.6991118431 inches

If the wheel makes 4,122 turns, then the
distance = 37.6991118431 * 4,122 = 
155,395.74 inches which equals 
12,949.64  feet
Answer is C

(That's a rather LARGE playground.  If it were a square, it would be three fifths of a mile on each side!!!)