a) Determin measure (in radians) of the central angle of sector of area 64 in^2 in circle radius of 16in.
b) The circular sector has the area of 16 cm^2 and the arc length of 6.0 cm. Find measure of central angle in degrees?
c) The thread is being pulled off the spool at the rate of 54.2 cm per sec. Determine radius of spool if it makes 136 revolutions per minute.