Solve the problem.A pendulum bob swings through an arc 80 inches long on its first swing. Each swing thereafter, it swings only 85% as far as on the previous swing. What is the length of the arc after 9 swings? Round to two decimal places.
A. 21.80 in.
B. 15.75 in.
C. 18.53 in.
D. 544.00 in.
Answer: A
Mathematics
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