If the minute hand of a clock has length 10 Centimeter Find the rate at which it sweeps out area

Answer 1

in 60 seconds the minute hand sweeps out pi(10)^2 = 100pi cm^2

in 1 second it sweeps out 100p/60 = 5pi/3 cm^2

it sweeps out 5pi/3 cm^2 per second

it sweeps out 100pi cm^2 per minute = about 314.1593 cm^2 per minute