Nets and surface area

Answer Key - Grade 6 Math Worksheet - Building Confidence

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

1. 1.

   Luz's toy block is a cube with edges of 2 cm. It has survived many tower crashes. What is its surface area in square cm?

   24
2. 2.

   Milo's ice cube is a cube with edges of 3 cm. It is chilling in the freezer. What is its surface area in square cm?

   54

3. Read this first

   Net of the box on a grid, each square 1 cm by 1 cm

   a row of four rectangles (7 by 2, 3 by 2, 7 by 2 and 3 by 2) with a rectangle 7 by 3 joined above the first and another joined below it.

4. 3.

   Pia's box is 7 cm long, 3 cm wide and 2 cm tall. Its net has two rectangles each of 21, 14 and 6 square cm. What is its surface area in square cm?

   82
5. 4.

   “Net of the box on a grid, each square 1 in by 1 in:” Ren's present is 8 in long, 5 in wide and 2 in tall. Its net has two rectangles each of 40, 16 and 10 square in. What is its surface area in square in?

   132
6. 5.

   Zee's paper pyramid is a square pyramid. Its net: a square base of 6 cm and 4 triangles (base 6, height 5, area 15 square cm each). What is its surface area in square cm?

   96
7. 6.

   Ari's tent roof is a square pyramid. Its net: a square base of 4 cm and 4 triangles (base 4, height 3, area 6 square cm each). What is its surface area in square cm?

   40
8. 7.

   Bo's card pyramid is a square pyramid. Its net: a square base of 8 cm and 4 triangles (base 8, height 6, area 24 square cm each). What is its surface area in square cm?

   160

9. Use this

   Four nets, A to D, drawn on a grid with squares 1 cm by 1 cm, as described in the answer choices.

10. 8.

    Esme draws four nets on grid paper. The pencil is getting short. Which of these nets folds into a cube?

    • a row of 5 squares with 1 square above the 2nd square, so it has a branch on top
    • a straight row of 6 squares
    • three rows of 2 squares, each row 1 square to the right of the row above
    • a block of 2 rows of 3 squares
11. 9.

    Jun is making a paper model. The glue is nearly dry. Which of these nets folds into a cube?

    • a straight row of 6 squares
    • a row of 4 squares with 1 square above the 2nd square and 1 square below the 4th
    • a block of 2 rows of 3 squares
    • a 2 by 2 block of squares with 1 square to the left of it and 1 square to the right of it
12. 10.

    Kira's class is cutting nets from card. The scissors are busy. Which of these nets folds into a cube?

    • two rows of 3 squares, where the lower row starts under the last square of the upper row
    • a row of 5 squares with 1 square below the 4th square
    • a block of 2 rows of 3 squares
    • a straight row of 6 squares