Class 6 Exam  >  Class 6 Notes  >  Mathematics (Maths) Class 6  >  NCERT Summary: Mensuration

Mensuration Summary Class 6 Maths Chapter 9

Perimeter

  • Perimeter is the distance covered along the boundary forming a closed figure when you go round the figure once.
  • Perimeter of a rectangle = 2 × (length + breadth)
  • Perimeter of a square = 4 × length of a side.
  • Perimeter of an equilateral triangle = 3 × length of a side.
  • Perimeter of a regular pentagon = 5 × length of one side.

Area

  • The amount of surface enclosed by a closed figure is called its area.
  • To calculate the area of a figure using a squared paper:
    (a) Ignore portions of the area that are less than half a square.
    (b) If more than half a square is in a region. Count it as one square.
    (c) If exactly half the square is counted, take its area as 1/2 sq units.
  • Area of rectangle = length × breadth.
  • Area of a square = side × side.
The document Mensuration Summary Class 6 Maths Chapter 9 is a part of the Class 6 Course Mathematics (Maths) Class 6.
All you need of Class 6 at this link: Class 6
94 videos|347 docs|54 tests

Top Courses for Class 6

FAQs on Mensuration Summary Class 6 Maths Chapter 9

1. What is the definition of perimeter?
Ans. The perimeter is the total length of the boundary of a closed figure. In other words, it is the sum of all the sides of the figure.
2. How is the perimeter of a rectangle calculated?
Ans. The perimeter of a rectangle is calculated by adding the lengths of all its four sides. It can be represented as 2 times the sum of the length and width of the rectangle.
3. Is the perimeter of a square always equal to four times its side length?
Ans. Yes, the perimeter of a square is always equal to four times its side length. Since all sides of a square are equal, adding the length of each side gives us four times the side length.
4. Can the perimeter of a triangle be greater than the sum of its three sides?
Ans. No, the perimeter of a triangle can never be greater than the sum of its three sides. The perimeter is calculated by adding the lengths of all three sides, so it is always equal to or less than the sum of the sides.
5. How is the perimeter of a circle calculated?
Ans. The perimeter of a circle is also known as its circumference. It is calculated by multiplying the diameter of the circle by the mathematical constant pi (π), which is approximately 3.14. Therefore, the formula for the perimeter of a circle is π times the diameter or 2 times π times the radius.
94 videos|347 docs|54 tests
Download as PDF
Explore Courses for Class 6 exam

Top Courses for Class 6

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Related Searches

Mensuration Summary Class 6 Maths Chapter 9

,

Exam

,

Mensuration Summary Class 6 Maths Chapter 9

,

shortcuts and tricks

,

study material

,

Sample Paper

,

Free

,

practice quizzes

,

Viva Questions

,

Important questions

,

pdf

,

MCQs

,

Objective type Questions

,

Extra Questions

,

Mensuration Summary Class 6 Maths Chapter 9

,

past year papers

,

Previous Year Questions with Solutions

,

ppt

,

mock tests for examination

,

Semester Notes

,

video lectures

,

Summary

;