As shown in the figure, the length of the rectangle is 12cm, the width is 5cm, the area of the triangle is 24cm2, what is the area of the shadow part

As shown in the figure, the length of the rectangle is 12cm, the width is 5cm, the area of the triangle is 24cm2, what is the area of the shadow part

Shadow area: 12 × 5 - 24 = 36 (square centimeter); answer: shadow area is 36 square centimeter