Read and download NCERT Class 7 Maths Perimeter and Area in NCERT book for Class 7 Mathematics. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Mathematics textbook for Class 7 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 7 Mathematics to understand the answers of the exercise questions given at the end of this chapter
NCERT Book for Class 7 Mathematics Chapter 11 Perimeter and Area
Class 7 Mathematics students should refer to the following NCERT Book Chapter 11 Perimeter and Area in Class 7. This NCERT Book for Class 7 Mathematics will be very useful for exams and help you to score good marks
Chapter 11 Perimeter and Area NCERT Book Class 7
Perimeter and Area
11.1 INTRODUCTION
In Class VI, you have already learnt perimeters of plane figures and areas of squares and rectangles. Perimeter is the distance around a closed figure while area is the part of plane or region occupied by the closed figure. In this class, you will learn about perimeters and areas of a few more plane figures.
11.2 SQUARES AND RECTANGLES
Ayush and Deeksha made pictures. Ayush made his picture on a rectangular sheet of length 60 cm and breadth 20 cm while Deeksha made hers on a rectangular sheet of length 40 cm and breadth 35 cm. Both these pictures have to be separately framed and laminated.
Who has to pay more for framing, if the cost of framing is Rs 3.00 per cm?
If the cost of lamination is Rs 2.00 per cm2, who has to pay more for lamination?
For finding the cost of framing, we need to find perimeter and then multiply it by the rate for framing. For finding the cost of lamination, we need to find area and then multiply it by the rate for lamination.
TRY THESE
What would you need to find, area or perimeter, to answer the following?
1. How much space does a blackboard occupy?
2. What is the length of a wire required to fence a rectangular flower bed?
3. What distance would you cover by taking two rounds of a triangular park?
4. How much plastic sheet do you need to cover a rectangular swimming pool?
Do you remember,
Perimeter of a regular polygon = number of sides × length of one side
Perimeter of a square = 4 × side
Perimeter of a rectangle = 2 × (l + b)
Area of a rectangle = l × b, Area of a square = side × side
Tanya needed a square of side 4 cm for completing a collage. She had a rectangular sheet of length 28 cm and breadth 21 cm (Fig 11. 1). She cuts off a square of side 4 cm from the rectangular sheet. Her friend saw the remaining sheet (Fig 11.2) and asked Tanya, “Has the perimeter of the sheet increased or decreased now?”
Has the total length of side AD increased after cutting off the square?
Has the area increased or decreased?
Tanya cuts off one more square from the opposite side (Fig 11.3).
Will the perimeter of the remaining sheet increase further?
Will the area increase or decrease further?
So, what can we infer from this?
It is clear that the increase of perimeter need not lead to increase in area.
Please refer to attached file for NCERT Class 7 Maths Perimeter and Area
| NCERT Class 7 Maths Integers |
| NCERT Class 7 Maths Fractions and Decimals |
| NCERT Class 7 Maths Data Handling |
| NCERT Class 7 Maths Simple Equations |
| NCERT Class 7 Maths Lines and Angles |
| NCERT Class 7 Maths The Triangle and Its Properties |
| NCERT Class 7 Maths Congruence of Triangles |
| NCERT Class 7 Maths Comparing Quantities |
| NCERT Class 7 Maths Rational Numbers |
| NCERT Class 7 Maths Practical Geometry |
| NCERT Class 7 Maths Perimeter and Area |
| NCERT Class 7 Maths Algebraic Expressions |
| NCERT Class 7 Maths Exponents and Powers |
| NCERT Class 7 Maths Symmetry |
| NCERT Class 7 Maths Visualising Solid Shapes |
| NCERT Class 7 Maths Solutions Answers |
Mathematics NCERT Book Class 7 Chapter 11 Perimeter and Area
The above NCERT Books for Class 7 Mathematics Chapter 11 Perimeter and Area have been published by NCERT for latest academic session. The textbook by NCERT for Chapter 11 Perimeter and Area Mathematics Class 7 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Chapter 11 Perimeter and Area NCERT etextbooks as the exams for Class 7 Mathematics are always asked as per the syllabus defined in these ebooks. These Class 7 Chapter 11 Perimeter and Area book for Mathematics also includes collection of question. We have also provided NCERT solutions for Class 7 Mathematics which have been developed by teachers of StudiesToday.com after thorough review of the latest book and based on pattern of questions in upcoming exams for Class 7 students.
NCERT Book Class 7 Mathematics Chapter 11 Perimeter and Area
The latest NCERT book for Chapter 11 Perimeter and Area pdf have been published by NCERT based on the latest research done for each topic which has to be taught to students in all classes. The books for Class 7 Mathematics Chapter 11 Perimeter and Area are designed to enhance the overall understanding of students. All Class 7 NCERT textbooks have been written in an easy to understand language which will help to enhance the overall level of Class 7 students.
Chapter 11 Perimeter and Area NCERT Book Class 7 Mathematics
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Class 7 Mathematics Chapter 11 Perimeter and Area NCERT Book
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Class 7 Chapter 11 Perimeter and Area NCERT Book Mathematics
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