Area of a Sector

While arcs can be thought of as a perimeter of a circle, sectors can be thought of as the area of (part of) a circle. It's formula is very similar to that of the arc formula:

where r represents the radius and theta represents the degree of the central angle in RADIANS not degrees (if it is in degrees, then convert it).  Remember that your final answer must include units and, since we're finding the area of something, the units must be squared.