For a parallelogram, the area is calculated by the equation, A = bh where A is area, b is base, and h is height. From this equation, we can solve for the base of the banner by dividing the area by the height. base of the banner = 127.5 cm² / 4.25 cm base of the banner = 30 cm Thus, the measure of the base of the banner is equal to 30 cm.
