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!!!)