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.

   Kira's garden bed is a parallelogram with base 2.7 m, height 1.2 m and slanted sides 1.5 m. The beans are climbing fast. What is its area in square meters?

   3.24
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.

   Milo's quilt patch is a parallelogram with base 2/3 ft, height 1/3 ft and slanted sides 5/12 ft. It is the comfiest patch. What is its area in square feet?

   2/9
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.

   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
7. 7.

   Esme's name tag is a rhombus with diagonals 4.8 cm and 6.4 cm. Each side is 4 cm. It says hello in purple. What is its area in square cm?

   15.36
8. 8.

   Jun's flower bed is a rhombus with diagonals 4.2 m and 5.6 m. Each side is 3.5 m. The bees love its shape. What is its area in square meters?

   11.76
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) × 6
   • (7 + 2.5) × 7.5 ÷ 2
   • 7 × 6
   • (7 + 2.5) × 6 ÷ 2
10. 10.

    Luz's name tag is a trapezoid: parallel sides 5 cm and 3.2 cm, height 2.4 cm, slanted side 3 cm. It has a smiley face on it. Which expression gives its area?

    • 5 × 2.4
    • (5 + 3.2) × 2.4
    • (5 + 3.2) × 2.4 ÷ 2
    • (5 + 3.2) × 3 ÷ 2