The Carousel on the National Mall has 4 rings of horses. Kiran is riding on the inner ring, which has a radius of 9 feet. Mai is riding on the outer ring, which is 8 feet farther out from the center than the inner ring is.
a. In one rotation of the carousel, how much farther does Mai travel than Kiran?



b. One rotation of the carousel takes 12 seconds. How much faster does Mai travel than Kiran?