The diagram shows one way to develop the formula for the area of a circle. pieces of a circle with radius rare rearranged to create a shape that resembles a parallelogram. since the circumference of the circle can be represented by 23r, and the area of a parallelogram is determined using a = bh, which represents the approximate area of the parallelogram-like figure? o a = (29)) (27)(21) (24)(0) (271)(21)