Help with converting number into radians.picture attached.

Could answer every question with steps

Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 10.5, q1 at 11.5, median at 12.5, q3 at 13.5, max at 15

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years