RD Sharma Class 6 Maths Solutions Chapter 20 - Mensuration

Important Topics in RD Sharma Class 6 Maths Chapter 20

Some important topics of this chapter are the perimeter of a rectangle, and regular shapes and areas of shapes such as closed and equilateral triangle, rectangle, open curve, square, etc.

Exercises in Chapter 20 RD Sharma Class 6 Mensuration are: 

• Exercise 20.1

• Exercise 20.2

• Exercise 20.3

• Exercise 20.4

• Exercise 20.5

Preparation Tips

• To test what you can recall, draw mind maps or other overview diagrams, and then check them against your notes. Note where specifics have been left out, or where holes remain, and go through and check those places.

• It is also useful to adjust the environment in which you study, such as your home, the library at school or college, a peaceful café, or someone else's house.

Conclusion

Chapter 10 Mensuration contains all the problems in the CBSE syllabus, NCERT Class 6 New Books for Maths. All the problems are solved here with a complete clarification and are available for free download. NCERT Class 6 New Chapter 10 Mensuration Books for Maths are given above. The benefits of accessing NCERT Class 6 New Books are not only limited to your progress in Mathematics but can offer a framework for other relevant topics. It will be a great benefit to get a strong grip on exhaustive sections of certain Mathematics chapters such as Chapter 10 Mensuration etc. when studying the derivations and principles behind numerical Maths.

What is Mensuration?

Mensuration could be defined as the division of mathematics that studies geometric figure calculation and its parameters such as area, length, volume, lateral surface area, surface area, etc is known as mensuration. The subject outlines the principles of calculation and discusses all the essential equations and properties of various geometric shapes and figures that we come across.  It is an important chapter for class 6 students and plays a crucial role in making the concepts clear. 

Mensuration is a subject of geometry. It deals with the size, region and density of different forms both 2D and 3D. Let’s think about 2D and 3D forms and the distinction between them and try learning it  in detail.

Let’s Learn About 2D and 3D Diagrams!

A 2D diagram is a shape made on a plane by three or more straight lines or a closed segment. Such shapes do not have a width or a height. But have two dimensions-length and breadth. Therefore, they are known as 2D shapes. In 2D figures, area (A) and perimeter (P) is to be ascertained. Whereas, a 3D shape  is surrounded by a variety of surfaces or planes. These shapes are often considered robust types. Unlike 2D shapes, 3D shapes have height or depth. They have three-dimensional length, breadth and height/depth and are thus labelled as 3D figures. 3D shapes are made up of many 2D shapes. Commonly known as strong forms, volume (V), curved surface area (CSA), lateral surface area (LSA) and complete surface area (TSA) are used in measuring 3D shapes.

Some Important Terms in Mensuration are:

• Area (A): Area is called the surface occupied by a defined closed region. 

• Perimeter (P): Total length of a figure’s boundary is called its perimeter. Perimeter is determined by only two-dimensional shapes or figures. It is a line along the edge of the closed vessel and is represented by P. Its measures are taken in a square unit.

• Volume (V): The width of the space in a three-dimensional closed shape or surface, like the area by a room or cylinder, is called volume. Volume is denoted by the alphabet V and it is the cubic meter.

• Curved Surface Area (CSA):  The curved surface area is an area of the only curved surface in a figure, ignoring the base and the top. Such as a sphere or a circle. 

• Lateral Surface Area (LSA): Total area of a figure’s lateral surfaces is called the Lateral Surface Area. Lateral surfaces are the layers covering the figure.  

• Total Surface Area (TSA): Calculation of the total area of all surfaces is called the Cumulative Surface Region. For instance, we can obtain the Total Surface Area in a cuboid by adding the area of all six surfaces. 

• Square Unit: A square unit is simply a one-unit square area. When we quantify some surface area, we relate it to the sides of one block square to know how many units will fit in the respective shape.

• Cube Unit: A cubic unit is a one-unit volume filled by a side cube. When we calculate the volume of any number, we refer to this cube of side one unit and see how many of these component cubes will fit in the defined closed form. 

If you want to learn more about Mensuration, just click the link and get into the world of fun-learning studying. RD Sharma solutions for class 6 students are always available on the Vedantu website free of cost.