+44 Find the length of the arc on a circle of radius 4, subtended by a central angle of 2pie/3 radians. Provide a sketch of the central angle and arc.
+2446 
Above is a diagram of the situation. We can use the formula L=r∗θrad where L is the arclength subtended by the central angle and r is the radius of the circle and θrad is the measure of the central angle in radians.
You should be able to finish it from here.
