You know that the length s of the arc intercepted on a circle of radius r by an angle of rotation of θ radians is s = rθ. Find an expression for the area of the sector of the circle with radius r that has a central angle of θ radians. Complete the explanation on your reasoning. Simplify your expressions. A full circle has an area of Ï€r². A full circle is 2Ï€ radians, so an angle of θ radians is ____________ of the circle.