Lesson 12: What Is Surface Area? | Unit 1: Area and Surface Area

Multiple Choice

What is the surface area of this rectangular prism?

• 16 square units

• 32 square units

• 48 square units

• 64 square units

Multiple Choice

Which description can represent the surface area of this trunk?

• The number of square inches that cover the top of the trunk.

• The number of square feet that cover all the outside faces of the trunk.

• The number of square inches of horizontal surface inside the trunk.

• The number of cubic feet that can be packed inside the trunk.

Multiple Choice

Which figure has a greater surface area?

• A

• B

Open Ended

A rectangular prism is 4 units high, 2 units wide, and 6 units long. What is its surface area in square units? Explain or show your reasoning.

Multiple Select

Select **all** units that can be used for surface area.

• square inches

• feet

• square meters

• square feet

• centimeters

Multiple Choice

What is the surface area of a figure made by stacking twelve cubes?

• 60 square units
• 40 square units
• 30 square units
• 50 square units

Multiple Choice

How would the surface area change if the top two cubes are removed from a stack of twelve cubes?

• The surface area decreases.
• The surface area remains the same.
• The surface area doubles.
• The surface area increases.

Open Ended

Here is Elena’s work for finding the surface area of a rectangular prism that is 1 foot by 1 foot by 2 feet. She concluded that the surface area of the prism is 296 square feet. Do you agree with her? Explain your reasoning.

Open Ended

Is the surface area of Cube B also twice that of Cube A? Explain or show your reasoning.

Open Ended

Is the volume of Cube B also twice that of Cube A? Explain or show your reasoning.