## RD Sharma Class 8 Solutions Chapter 21 – Volumes Surface Area Cuboid Cube (Ex 21.3) Exercise 21.3 – Free PDF

## FAQs on RD Sharma Class 8 Solutions Chapter 21 – Volumes Surface Area Cuboid Cube (Ex 21.3) Exercise 21.3

**1. How do we define cube and cuboid differently?**

In mathematics, the cube and cuboid are three-dimensional shapes. Rotating two-dimensional geometries known as square and rectangle, respectively, form the cube and cuboid.

Cube: A cube is a three-dimensional shape with the XYZ plane as its definition. This object has six faces, eight vertices, and twelve edges. All of the cube's faces are square and have the same measurements.

Cuboid: A cuboid is a polyhedron having six faces, eight vertices, and twelve edges. The cuboid's faces are parallel. A cuboid's faces, on the other hand, are not all the same size.

For more such information students can go to the Vedantu app or the Vedantu website and learn more about the concepts in detail. Vedantu provides free access to all the explanations and study material which will help students learn in a hassle-free way.

**2. What are some properties of a cube?**

A cube has numerous properties if somebody has to count. Since the question has been asked, here are the properties of the cube listed below.

There are a total of six faces and twelve edges of equal length in a cube.

Square-shaped faces form a cube.

In the plane, the angles of the cube are at a right angle.

Four other faces are always met by each face of a cube.

Three faces and three edges meet each vertex of the cube.

The cube's opposite edges are parallel to one other.

**3. What is the difference between the lateral surface area of the cube and the total surface area of the cube?**

The difference between the lateral surface area of the cube and the total surface area of the cube is as follows:

Cube's total surface area: A cube's total surface area refers to the total area covered by all six of its faces. The sum of the areas of these 6 faces is used to calculate TSA.

Cube's lateral surface area: The total area covered by a cube's side or lateral face is referred to as the lateral surface area. The sum of the areas of these four faces is used to determine LSA.