Areas of Triangles, Parallelograms, and Trapezoids

What is the formula for the area of a trapezoid?

• A = 1/2h(b1 + b2)

• A = bh

• A = 1/2bh

• A = lw

Find the area of the figure shown.

• 34 units²

• 960 units²

• 220 units²

• 480 units²

Find the area of the composite figure

• 40 ft²

• 49 ft²

• 63 ft²

• 58 ft²

The area of one parallelogram is 135 cm². The area of the second parallelogram is 15 cm². What is the ratio of the areas?

• 1/9

• 9/1

• 7/1

• 5/1

The bases are the same length. The height of one parallelogram is twice the height of the other. What is the ratio of the areas of these parallelograms?

• 1/2

• 2/1

• 1/4

• 1/3

The height and length of a base of one parallelogram are both twice those of the other parallelogram. Find the ratio of the areas of these parallelograms.

• 1/2

• 2/1

• 1/4

• 4/1

The height and lengths of the bases of one trapezoid are all twice those of the other trapezoid. Find the ratio of the areas.

• 4/1

• 1/4

• 1/2

• 2/1

The trapezoids have the same height. One trapezoid has base lengths of b and 2b. The other has base lengths of b and 4b. Find the ratio of the areas.

• 5/3

• 4/2

• 1/2

Which of the following is a characteristic of a trapezoid?

• Having one pair of parallel sides

• Having all sides of equal length

• Having no right angles

• Having all angles of equal measure

What is the area of this parallelogram?

• 38cm²

• 14cm²

• 35cm²

• 30cm²