John is planning to buy an irregularly shaped plot of land. Referring to the diagram, determine the total area of the land.

a. 6,400 m²

b. 5,200 m²

c. 4,500 m²

d. 4,600 m²

To ?nd the total area, include the area of region A plus the area of region B plus the area of region C. The area of region A is length times width or  (100)(40) = 4,000 m². Area of region B is bh or (40)(30) = 600 m². The area of region C is bh or 1/2(30)(40) = 600 m². The combined area is the sum of the previous areas or 4,000 + 600 + 600 = 5,200 m². If you select a, you miscalculated the area of a triangle as bh instead of 1 bh. If you select c, you found only the area of the rectangle. If you select d, you found the area of the rectangle and only one of the triangles.