Expert: Ahmed Salami - 3/29/2009

Question
draw a circle with center point o and an angle of 40 degrees and a raduis of 20 cm. the question is a person moving counterclockwise made a the 40 degree in 1.75 minutes. what is the angle degree if he walks 10 minutes?

Answer
Hi Ali,
If the person is moving at the same speed on the circle then the time spent is proportional to the angular distance (or degree) covered.
So, in 1 minute, angle covered is 40/1.75 degrees.
In 10 minutes, angle covered = (40/1.75) x 10
= 228.57 degrees

Regards