1. perimeter of different shapes

2. *Engage*

3. We take some different shapes How to measure their boundary

4. Measuring the boundary of any shape is called perimeter perimeter Let’s measure the perimeter of these figures (a) (c) (b)

5. *Explain*

6. Perimeter

7. circle radius diameter

8. circle radius diameter circumference of the circle=2πr (r is the radius of the circle) =2x22/7x7 =44cm square

9. circle radius diameter circumference of the circle=2πr (r is the radius of the circle) =2x22/7x7 =44cm square

10. Equilateral triangle Perimeter=sum of all three sides =(5+5+5)cm =15cm Perimeter=5cm+4cm+3cm =12cm Right angle triangle 5cm 4cm 3cm

11. 8cm 5cm 4cm Perimeter= 8cm+5cm+4cm =17cm Scalene triangle

12. *Elaborate* Your turn…….

13. rectangle trianglesquare measure 30cm 15cm 14cm 15cm perimeter of the triangle=34cm ???

15. *Engage*

16. Firstly we have different shapes Recognize ?????

17. *Explain*

18. Area that is cover by a shape: -

19. Space covered by any object or shape is called the area of the shape

20. Area of a rectangle area 5cm 3cm 15 square of 1cm Area of rectangle= length x breath Area = 15cmsquare 1 square unit

21. *Elaborate* Your turn…….

22. Measure the area of different shapes 30cm 15cm 8cm R=2cm 8cm R=2cm R=1cm r R