Unit 7 review

How many faces does the shape below have?

• 2

• 4

• 6

• 8

Answer explanation

The shape has 6 faces, so the correct answer is 6.

What is this 3D solid figure called?

• triangular prism

• rectangle

• rectangular prism

• square

Answer explanation

The 3D solid figure is called a rectangular prism because it has six faces, all of which are rectangles.

Name the solid figure.

• Cone

• Cylinder

• Sphere

• Circle

Answer explanation

The correct solid figure is a cylinder, as it has two parallel circular bases and a curved surface.

What shape is this?

• Cube

• Triangular Prism

• Rectangular Pyramid

• Cone

Answer explanation

The shape is a Triangular Prism because it has two triangular bases and three rectangular faces.

How many faces does this solid figure have?

• 2

• 1

• 3

• 0

Answer explanation

The correct answer is 2 because the solid figure has 2 faces.

I have 0 flat surfaces, 0 vertices, and 0 edges. Which solid figure am I?

• Cylinder

• Cone

• Sphere

• Cube

Answer explanation

A sphere has 0 flat surfaces, 0 vertices, and 0 edges, making it the correct choice.

A square pyramid is represented below. 
Which statement is true?

• A square pyramid has 4 edges and 4 faces.

• A square pyramid has 8 edges and 4 faces.

• A square pyramid has 4 edges and 5 faces.

• A square pyramid has 8 edges and 5 faces.

Answer explanation

A square pyramid has 8 edges and 5 faces because it has 5 triangular faces and 1 square base, resulting in a total of 8 edges.

Which shape is 3-D?

• circle

• rectangle

• cube

• square

Answer explanation

The correct 3-D shape is a cube, as it has three dimensions - length, width, and height, unlike a circle, rectangle, or square.

What is the formula used to find the volume of a rectangular prism?

• V = Lw

• V = Lwh

• V = 1/2bh

• V = 2∏r

Answer explanation

The formula V = Lwh is used to find the volume of a rectangular prism, where L is the length, w is the width, and h is the height.

What is the volume of this prism?

• 18 cubic cm

• 6 cubic cm

• 9 cubic cm

Answer explanation

The volume of the prism is calculated by multiplying the area of the base by the height. In this case, the volume is 6 cm x 3 cm = 18 cubic cm, so the correct answer is 18 cubic cm.