Area of parallelograms, trapezoids and rhombuses

Answer Key - Grade 7 Math Worksheet

Circle the best answer, or write your answer on the line.

1. 1.

   Jun's mural is a parallelogram with base 2.2 m, height 1.6 m and slanted sides 2 m. The painted rocket looks fast. What is its area in square meters?

   3.52
2. 2.

   Luz's lawn is a parallelogram with base 4.5 m, height 2.8 m and slanted sides 3.5 m. It needs mowing already. What is its area in square meters?

   12.6
3. 3.

   Noah's flower border is a parallelogram with base 4 ft, height 3/4 ft and slanted sides 5/4 ft. The flowers stand in a neat row. What is its area in square feet?

   3
4. 4.

   Ren's lawn is a trapezoid: parallel sides 9.5 m and 6.5 m, height 4 m, slanted side 5 m. A robin keeps watch. What is its area in square meters?

   32
5. 5.

   Tala's name tag is a trapezoid: parallel sides 6.5 cm and 4 cm, height 2.4 cm, slanted sides 2.5 cm and 3 cm. It says hi. What is its area in square cm?

   12.6
6. 6.

   Zee's window pane is a trapezoid: parallel sides 2 ft and 3/2 ft, height 2/3 ft, slanted side 5/6 ft. It sparkles after cleaning. What is its area in square feet?

   7/6
7. 7.

   Ari's paper banner is a trapezoid: parallel sides 3 ft and 2 ft, height 3/4 ft, slanted side 5/4 ft. It says GO TEAM. What is its area in square feet?

   15/8
8. 8.

   Bo's kite is a rhombus with diagonals 0.9 m and 1.2 m. Each side is 0.75 m. It wants to touch a cloud. What is its area in square meters?

   0.54
9. 9.

   Kira's garden plot is a trapezoid: parallel sides 7 m and 2.5 m, height 6 m, slanted side 7.5 m. The radishes are ready. Which expression gives its area?

   • (7 + 2.5) × 7.5 ÷ 2
   • (7 + 2.5) × 6
   • 7 × 6
   • (7 + 2.5) × 6 ÷ 2
10. 10.

    Noah's window pane is a trapezoid: parallel sides 3.6 ft and 2.4 ft, height 1.6 ft, slanted side 2 ft. It lets in lots of sun. Which expression gives its area?

    • (3.6 + 2.4) × 1.6 ÷ 2
    • (3.6 + 2.4) × 1.6
    • 3.6 × 1.6
    • (3.6 + 2.4) × 2 ÷ 2