Grade 6 Unit 1 Lesson 15: Surface Area and Nets

What type of polyhedron can be assembled from a net with two identical triangular bases?

• Hexagonal prism

• Triangular prism

• Square pyramid

• Rectangular prism

What was Jayda's mistake in calculating the area of the triangles?

• She forgot to divide by 2 after calculating base times height.

• She used the wrong units.

• She used the wrong formula for rectangles.

• She added the areas incorrectly.

How do you calculate the surface area of a rectangular prism like a cereal box?

• Multiply the perimeter by the height.

• Add the areas of the top and bottom faces only.

• Multiply the length, width, and height.

• Add the areas of all six faces.

What is the surface area of a cereal box with dimensions 8 inches by 2 inches by 12 inches?

• 288 square inches

• 144 square inches

• 272 square inches

• 136 square inches

How does removing the top two cubes affect the surface area of a stacked cube figure?

• Increases by 6 square units

• Decreases by 6 square units

• Increases by 12 square units

• Decreases by 12 square units

What is the surface area of a stacked cube figure with 12 cubes?

• 18 square units

• 24 square units

• 36 square units

• 48 square units

What three-dimensional figure can be assembled from a net with one square base?

• Rectangular prism

• Hexagonal pyramid

• Square pyramid

• Triangular prism

How do you calculate the area of a triangle?

• Perimeter times height

• Base times height

• Base times height divided by 2

• Length times width

What is the surface area of a square pyramid with a base of 4 units and a height of 5 units for each triangle?

• 56 square units

• 48 square units

• 40 square units

• 64 square units

Which of the following is NOT a correct length for the edges of the polyhedra discussed?

• 5 units

• 7 units

• 4 units

• 10 units