cuboid


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

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