OpenUp 6th Math 1.12 Practice Problems and Vocab

Each flat side of a polyhedron is called a ___. For example, a cube has 6 of them, and they are all squares.

The ___ ___ of a polyhedron is the number of square units that covers all the faces of the polyhedron, without any gaps or overlaps.

For example, if the faces of a cube each have an area of 9 cm², then the ___ ___ of the cube is 6 x 9, or 54 cm².

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.

Which figure has a greater surface area?

• A

• B

• they have the same surface area

• it is impossible the calculate the surface area

A rectangular prism is 4 units high, 2 units wide, and 6 units long. What is its surface area in square units? Type the number only.

Draw a right triangle with an area of 6 square units.

Draw an acute triangle with an area of 6 square units.

Draw an obtuse triangle with an area of 6 square units.

Find the area of triangle MOQ in square units. Type the number only.