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
Video Examples: Surface Area of a Cuboid  Mathematics
Example of Cuboid
Solved Example on Cuboid
Ques: Which net can be folded to form a cuboid?
Choices:
A. Figure 1B. 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.
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