1. Area and its Boundary Class: V By Deepali Sircar K.V. MEG & CENTRE
BANGALORE

2. The distance around the outside of a shape is called the perimeter
8 cm
6 cm
6 cm
8 cm
The perimeter of the shape is = 28cm.

3. What is the perimeter of each of these shapes?
18cm
18cm
22cm
18cm
26cm

4. The distance around the outside of a shape is called the perimeter.
Find the perimeter
3cm
5cm
7cm
3cm
The distance around the outside of a shape is called the perimeter.
Perimeter = 18cm
Perimeter = 22cm

5. The area of a shape is the amount of space inside it
The area of this shape is 18cm2
To find out how much shape is inside, we can count the squares

6. Find the area of each of these shapes
12cm2
22cm2
26cm2

7. This is an irregular shape. This means that the sides aren’t straight.
To find the area of an irregular shape you first count the full squares inside it

8. The area of the shape is 60cm2
You then count all the other squares which have more than half the area covered

9. What is the area of each of these shapes?
24cm2
25cm2
What is the area of each of these shapes?
35cm2
22cm2

10. To work out the number of squares
The rectangle is made of 6 rows of 8 squares
To work out the number of squares
we multiply 6 by 8
Counting each square can take a long time. Is there a quicker way?
The area of the shape is 48cm2

11. What is the area of each of these shapes?
18cm2
20cm2
What is the area of each of these shapes?
30cm2
14cm2
22cm2

12. We can work out the area of a rectangle
without the grid
length
Area = length x width
width

13. Now find the area of the rectangles
7cm
5cm
35cm2
5cm
20cm2
4cm
9cm
36cm2
12.5cm
4cm
2cm
25cm2

14. Find the perimeter & areaw o r k s h e t n
Find the perimeter & area

15. w o r k s h e t
Find the area

16. Now try this…
1 One side of a square garden is 5 m. What will be the length of the fencing required?
Fencing= the boundary = perimeter = sum of all sides = (or 4x5 because it’s a square) = 20 m
2. A 20 m-long thin wire is formed into a rectangle. If the width of this rectangle is 4 cm, what is its length?
Length = 6cm
3. Find the area of a rectangle with length of 6 cm and width of 4 cm
Area = length x width = 6x4 sq cm = 24 sq cm

18. How to calculate THE PERIMETER of a TRIANGLE
This is easy !! Lets see how… To find the perimeter you just need to add up the length of all the 3 sides.. This method works with any other shape that doesn’t have parallel sides like a rectangle.
The perimeter is= 5cm+11cm+13cm= 29 cm
13 cm
5 cm
11 cm

19. Worksheet Name:____________________ What is the area of the moon?
_____________________cm2
What is the area of the rectangle?
_____________________cm2
What is the perimeter of the rectangle?
_____________________cm

20. What is the area of the house?
_____________________cm2