Problema Solution
A person is walking around a circular garden of radius a meters. The expression
2πan/b represents the time, in minutes, the person takes to walk n trips around the
garden. Which factor in the given expression represents the distance, in meters, the
person covers in one minute?
A. 1/b B. an C. b/2 D. 2πa
Answer provided by our tutors
The circumference of the circular garden with radius a is: 2πa
The length of the distance walked is: 2πan
The time in minutes is: 2πan/b
Since we need the distance covered in 1 min we divide the total distance by the number of minutes:
(2πan) : (2πan/b) = (2πan)*b/(2πan) = b
The distance the person covers in 1 minute is b.