The Carousel on the National Mall in Washington, DC, has 4 rings of horses. Andre is riding on the inner ring, which has a radius of 9 ft . Lin is riding on the outer ring, which is 8 ft farther from the center than the inner ring. a In one rotation of the carousel, how much farther does Lin travel than Andre?
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To find out how much farther Lin travels than Andre in one rotation of the carousel, we first determine the circumferences of their respective paths. Andre, riding on the inner ring with a radius of 9 ft, travels a circumference of \(C_A = 2\pi(9) = 18\pi\) feet. Lin, riding on the outer ring with a radius of 9 ft + 8 ft = 17 ft, travels a circumference of \(C_L = 2\pi(17) = 34\pi\) feet. Now, to find the difference in distance traveled in one rotation, we subtract Andre's distance from Lin's: \[C_L - C_A = 34\pi - 18\pi = 16\pi\] feet. So, Lin travels \(16\pi\) feet farther than Andre in one rotation! That's about 50.27 feet when you plug in the value of \(\pi\), or as we like to say, Lin gets an extra "carousel cardio" workout!