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RS Aggarwal Solutions Class 7 Chapter-20 Mensuration (Ex 20C) Exercise 20.3

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RS Aggarwal Solutions Class 7 Chapter-20 Mensuration (Ex 20C) Exercise 20.3 - Free PDF

Free PDF download of RS Aggarwal Solutions Class 7 Chapter-20 Mensuration (Ex 20C) Exercise 20.3 solved by Expert Mathematics Teachers on Vedantu.com. All Exercise 20.3 Questions with Solutions for Class 7 RS Aggarwal to help you to revise complete syllabus and score more marks. Register for online coaching for IIT JEE (Mains & Advanced) and other Engineering entrance exams. Register Online for Class 7 Science tuition on Vedantu.com to score more marks in CBSE board examination.


Every NCERT Solution is provided to make the study simple and interesting on Vedantu. Vedantu.com is No.1 Online Tutoring Company in India Provides you Free PDF download of NCERT Maths Class 7 solved by Expert Teachers as per NCERT (CBSE) Book guidelines. All Chapter wise Questions with Solutions to help you to revise complete syllabus and score more marks in your examinations.


Mensuration is an extremely important Chapter for Class seven students. It is prescribed by the CBSE and has to be studied in depth in order to gain knowledge about how to calculate the area and Perimeter of various solids and figures. This Chapter deals with the area and Perimeter of various figures such as a Triangle, a Rectangle, circle and the calculation of area of pathways or borders and Rectangle shapes. The Mensuration Chapter of higher Classes mainly deals with problems related to Perimeter and area of other play in closed figures like quadrilaterals, and also deals in-depth about the surface area and volume of solids such as cube, cuboid, and cylinder. Mensuration is the 20th Chapter of RS Aggarwal’s book. In this book, there are detailed tables explaining the Perimeter and area of various figures like equilateral Triangle Isosceles right Triangle Parallelogram rhombus trapezium circle semicircle ring sector of a circle. All these figures and much more is explained in depth in RS Aggarwal’s book. This book is based on the CBSE curriculum so it is advised for the students to practice numerical questions from RS Aggarwal. RS Aggarwal contains eight exercises for Mensuration in the last one being a test paper that will help students to check their progress and to check if their concepts have been cleared.

Class 7 Chapter-20 Mensuration RS Aggarwal Solutions For (Ex 20C) Exercise 20.3

Why Study This Chapter From R S Aggarwal?

RS Aggarwal has simplified this Chapter for students who may find it a little difficult to study. The test papers prepared by RS Aggarwal are made for the students to keep their progress in check. This Chapter of RS Aggarwal deals with Squares and Rectangles, Triangles as parts of Rectangles, generalizing for other congruent parts of Rectangles, area of a Parallelogram, Area of a Triangle, it deals in-depth about circles, the circumference of a circle, area of a circle, conversion of units, applications, which mainly deals with calculating the pathways or borders. It explains all the formulas in-depth. RS Aggarwal is based on the CBSE curriculum and therefore it is advised for students to prepare for their examinations from this book. RS Aggarwal is known for simplifying hard-to-understand topics and therefore, students who find it difficult to solve some Mathematical equations can now solve them easily as all the solutions provided in RS Aggarwal have reasoning as to what all steps lead to reach a certain solution.

To calculate the area of a figure using a Square d paper, the following conventions are adopted :

  • Ignore portions of the area that are less than half a Square .

  • If more than half a Square  is in a region. Count it as one Square .

  • If exactly half the Square  is counted, take its area as ½ sq units.

FAQs on RS Aggarwal Solutions Class 7 Chapter-20 Mensuration (Ex 20C) Exercise 20.3

1. What does Mensuration mean?

Mensuration in Mathematics means to measure an object; it is a part of geometry and it is used to compute the length of the area's volume from given dimensions or angles. This Chapter is covered in depth in the RS Aggarwal Book of Mathematics for Class seven. Students learn about various concepts and learn different formulas needed to calculate the area or Perimeter of a certain object. Mensuration is a concept that is taught throughout the school that is from Class 6 to 12 it gradually progresses towards a more complex concept.

2. What are the important topics studied in this Chapter?

The important topics covered in Mensuration include - with area and Perimeter of various figures such as a Triangle, a Rectangle, circle and the calculation of area of pathways or borders and Rectangle shapes. This Chapter takes a more complex shape when it widens its arithmetical operations in higher Classes.  To get a more comprehensive understanding students are advised to study RS Aggarwal. The study material of the same is available on Vedantu’s website for free.

3. Are the practice questions in RS Aggarwal Class7 Chapter 20 difficult?

No, the practice questions based on Mensuration are not at all difficult. RS Aggarwal along with practice questions gives detailed tables that explain the formulas of the area and Perimeter of various shapes and figures such as equilateral Triangle Isosceles Triangle rhombus trapezium semicircle et cetera. The CCE test questions and insinuations given at the back of the Chapters will help you get an idea of how the question paper will be prepared so that students can prepare accordingly.

4. Where can I find all the study material related to Mensuration on the internet for free?

The study material required for the examination is available on the Vedantu’s website for free. Students can get their hands on the revision notes and important questions that are curated by Vedantu’s expert Mathematical team. The students wouldn’t have to waste the time on other websites as Vedantu acts as a one-stop destination. Students can use RS Aggarwal Solutions Class 7 for self-study and all the study material related to RS Aggarwal that is available on Vedantu‘s website for free.