**Definition of Cuboid**

- Cuboid is a polyhedron with six rectangular plane faces.

**More about Cuboid**

- There are 12 edges and 8 vertices in a cuboid.
- Cuboid is also called as right rectangular prism or rectangular parallelepiped box.
- If all the edges of a cuboid are equal then it forms a cube.
- In a cuboid opposite faces are equal and parallel and all angles are right angles.

- Formulas for the above rectangular box:

Volume =*lwh*

Lateral Surface Area = 2*lh*+ 2*wh*

Surface Area = 2*lw*+ 2*lh*+ 2*wh*

**Example of Cuboid**

- The above figure is a rectangular prism having six rectangular faces with the opposite faces being parallel.

**Solved Example on Cuboid**

Which net can be folded to form a cuboid?

Choices:

A. Figure 1

B. Figure 2

C. Figure 3

D. Figure 4

Correct Answer: C

Solution:

Step 1:A cuboid is a polyhedron with six rectangular plane faces.

Step 2:Observe the nets given in the four figures. [Cut a paper into the shape of net and fold it.]

Step 3:We observe that a cuboid is formed only from the net in Figure 3.

Step 4:The net in the Figure 3 can be folded to form a cuboid.

**Related Terms for Cuboid**

- Cube
- Face
- Polyhedron
- Rectangular prism
- Right Angle
- Solid