Area of triangles, parallelograms and composite shapes

Answer Key - Grade 6 Math Worksheet

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

1. 1.

   Luz's paint sponge is a parallelogram with base 13 cm, slanted side 10 cm and height 8 cm. It soaks up paint fast. What is its area in square cm?

   104
2. 2.

   Pia's pizza slice is a triangle with base 10 cm, height 12 cm and one slanted side of 13 cm. It is gone in seconds. What is its area in square cm?

   60
3. 3.

   Ren's doll bandana is a triangle with base 18 cm, height 9 cm and one slanted side of 15 cm. The doll looks very stylish. What is its area in square cm?

   81
4. 4.

   Zee's sunflower bed is a right triangle with legs 8 ft and 15 ft and a longest side of 17 ft. The sunflowers keep staring at the sun. What is its area in square ft?

   60
5. 5.

   Ari's plus-shaped garden has a long rectangle, 10 ft by 2 ft, and a tall one, 3 by 8 ft. They share a piece 3 by 2. What is its area in square ft?

   38
6. 6.

   Bo's plus-shaped reading rug has a long rectangle, 11 ft by 3 ft, and a tall one, 2 by 7 ft. They share a piece 2 by 3. What is its area in square ft?

   41
7. 7.

   Esme's plus-shaped band stage has a long rectangle, 9 ft by 4 ft, and a tall one, 3 by 10 ft. They share a piece 3 by 4. What is its area in square ft?

   54
8. 8.

   Jun's sail is a triangle with base 18 ft, height 4 ft and one slanted side of 5 ft. The boat is named Wave Hello. Which is its area?

   • 36 square ft
   • 45 square ft
   • 36 ft
   • 72 square ft
9. 9.

   Kira's paper pennant is a triangle with base 16 cm, height 5 cm and one slanted side of 13 cm. Go, team, go! Which is its area?

   • 80 square cm
   • 40 cm
   • 104 square cm
   • 40 square cm
10. 10.

    Luz's treehouse roof is a triangle with base 14 ft, height 8 ft and one slanted side of 10 ft. The squirrels are watching. Which is its area?

    • 112 square ft
    • 56 ft
    • 56 square ft
    • 70 square ft