(a) What angle in radians is subtended by an arc 1.50 m long on the circumference of a circle of radius 2.50 m? What is this angle in degrees?

(b) An arc 14.0 cm long on the circumference of a circle subtends an angle of128. What is the radius of the circle?

(c) The angle between two radii of a circle with radius 1.50 m is 0.700 rad.What length of arc is intercepted on the circumference of the circle by the two radii?