How far does the tip of the minute hand of a clock move in 225 minutes if the hand is 6.4 inches long?

in 225 minutes the minute hand cycles the clock 3.75 times.

each time round the tip travels 2 pi x 6.4 which is 40.2 in to 3 significant figures.

Therefore the total distance = 151 in (12 ft 7 in) to 3 significant figures or 48 pi if you want an exact answer