8. Ex. 2) Finding an enclosed area AREA = LENGTH x WIDTH = (620 – 2w) (w) = - 2w - 48050 * h = width / k = maximum area DIMENSIONS: LENGTH = 620 – 2w = 620 – 2(155) = 310m WIDTH = 155m EXAMPLE: At a local beach, the lifeguard has 620m of marker buoys to rope of a safe swimming area. Calculate the dimensions of the rectangular swimming area to create maximum swimming room if one side if the area is to be the beach. CHECK: K= maximum area Therefore : length x width = 48050m 310 x 155 = 48050 m