A circular racetrack has a circumference of one mile which is 5,280 feet. What is the radius of the racetrack?


  1. The answer is 2,640 because radius is from center of an object to the perimeter. So divide 5,280 by 2 to get the half which is the same as the center

  2. To get any radius from the circumference of a circle, you divide it by 2. (because radius is halfway through the circle to a point) .. 5,280 / 2 = 2,640 !! Hope this helps


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