What is the surface area of this rectangular prism? 16 square units
32 square units
48 square units
64 square units
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.

“Trunk 1” via Wikimedia Commons. Public Domain.
Which figure has a greater surface area?

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.