1. MG 1.4 Lesson 12-6
Perimeter

2. First we need to find the length of each side.
8 cm
The distance around the outside of a shape is called the perimeter.
6 cm
6 cm
8 cm
The perimeter of the shape is = 28cm.

3. First we need to find he length of each side.
10 cm
The distance around the outside of a shape is called the perimeter.
8 cm
8 cm
10 cm
The perimeter of the shape is = 36 cm.

4. First we need to find he length of each side.
7 cm
The distance around the outside of a shape is called the perimeter.
4 cm
The perimeter of the shape is = 22cm.

5. 5cm
6cm
3cm
4cm
18cm
18cm
2cm
6cm
What is the perimeter of each of these shapes? Your teacher will give you copy of the worksheet.
5cm
22cm
18cm
7cm
11cm
2cm
26cm

6. Mrs. Spoden has a desk in the shape of a rectangle, the sides are 4 meters long and 8 meters wide. What is the perimeter of the rectangle?

7. Mrs. Spoden has a square book one side is 15 meters long, what is the perimeter?

8. Now find the perimeter of these shapes.
4cm
3cm
3cm
5cm
7cm
3cm
Perimeter = 18cm
Perimeter = 22cm
Perimeter = 28cm

9. MG 1.1 &1.4 Lesson 12-7
Area

10. To find out the area inside the shape we can count the squares.
The area of a shape is the amount of space inside it.
The area of the shape is 18cm2.

11. 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.
8cm
Counting each square can take a long time. Does anyone know a quicker way?
6cm
The area of the shape is 48cm2.

12. 5cm
6cm
18cm2
3cm
4cm
20cm2
2cm
6cm
What is the area of each of these shapes? Your teacher will give you copy of the worksheet.
30cm2
5cm
7cm
14cm2
11cm
22cm2
2cm

13. We can work out the area of a rectangle without the grid.
length
10cm
7cm
Area = length x width
width
Remember Area means how many squares
10 X 7 = 70
Area = 70 cm2

14. We can work out the area of a rectangle
without the grid.
length
11cm
Area = length x width
width
3cm

15. What is the area and perimeter of these shapes?
What two shapes have the same area but different perimeters?
6cm
5cm
2cm
5cm
10cm
1cm
3cm
4cm
10cm
2cm

16. We can find the area without a picture.
l = Means length, w = means width
To find the area we l x w
l = 13 cm, w = 6 cm
What is the area?

17. You try! Find the Area of the rectangle
l = 5 cm, w = 8 cm
l = 9 cm, w = 3 cm
Find the Area of the square
S = 4 cm
S = 15 cm

18. MG 1.2 & 1.3 Lesson 12-9
Area vs. Perimeter

19. What rectangles have the same area but different perimeters?
7cm
5cm
35cm2
5cm
20cm2
4cm
10cm
20cm2
12.5cm
2cm
2cm
25cm2

20. A rectangle has the length of 3 feet and the width of 5 feet
A rectangle has the length of 3 feet and the width of 5 feet. Which of the following have the same perimeter but different Area?
a) 15ft long and 1 ft wide
b) 6 ft long and 4 ft wide
c) 4ft long and 4ft wide
d) 2 ft long and 12ft wide

21. A square has the area of 25 what is the perimeter?

22. A rectangle has the length of 4 and an area of 12 what is the width?

23. A rectangle has the length of 7 and an area of 42 what is the width?

24. A rectangle has the length of ____ and an area of ____ what is the width?

25. Area of Irregular Figures
MG 1.4 Lesson 12-8
Area of Irregular Figures

26. 4cm
2cm
To find the area of this shape we have to split it up into two rectangles.
4cm
10cm
8cm
8cm

27. To find the area of this shape we have to split it up into two rectangles.
4cm
2cm
4cm
10cm
8cm
8cm

28. To find the area of this shape we have to split it up into two rectangles.
4cm
2cm
4cm
10cm
8cm
8cm

29. 4cm
Total area = = 72 cm2
2cm
To find the area of this shape we have to split it up into two rectangles.
4cm
Area =
4 x 10
10cm
Area =
4 x 8
8cm
40cm2
32cm2
8cm

30. Find the area and perimeter of each of these shapes
Find the area and perimeter of each of these shapes? Your teacher will give you copy of the worksheet.
5cm
2cm
4cm
9cm
5cm
6cm
11cm
2cm
4cm
5cm
4cm
2cm
5cm
4cm
3cm
3cm
3cm
4cm
7cm
7cm
11cm

31. Total area = 45 + 20 = 65 cm2 Perimeter = 36 cm Area = Area = 4 x 5

32. Total area = 10 + 36 = 46 cm2 Perimeter = 34 cm Area = 2 x 5 10cm2

33. There is another way of doing this question.
Total area = = 65 cm2
Perimeter = 42 cm
There is another way of doing this question.
Area =
4 x 7
Area =
4 x 4
4cm
3cm
3cm
3cm
Area =
3 x 7
4cm
7cm
7cm
28cm2
16cm2
21cm2
11cm

34. Total area = 77 – 12 = 65 cm2 Perimeter = 42 cm Area = 3 x 4 12cm2

35. Well Done

36. 5cm
6cm w o r k s h e t n
4cm
3cm
2cm
6cm
5cm
7cm
11cm
2cm

37. 5cm
6cm w o r k s h e t n
4cm
3cm
2cm
6cm
5cm
7cm
11cm
2cm

38. w o r k s h e t f u 5cm 2cm 6cm 11cm 2cm 4cm 5cm 4cm 9cm 5cm 4cm 2cm

39. What rectangles have the same area but different perimeters?
7cm
5cm
5cm
4cm
10cm
12.5cm
2cm
2cm

41. A square has the area of 16 what is the perimeter?

42. A rectangle has the length of 5 and an area of 30 what is the width?

43. A rectangle has the length of 3 and an area of 21 what is the width?

44. A rectangle has the length of 2 and an area of 10 what is the width?

45. A rectangle has the length of 9 and an area of 72 what is the width?

46. A square has the area of 4 what is the perimeter?

47. A rectangle has the length of 5 and an area of 40 what is the width?

48. A rectangle has the length of 3 and an area of 18 what is the width?

49. A square has the area of 49 what is the perimeter?

50. A square has the area of 36 what is the perimeter?

51. A rectangle has the length of 5 and an area of 35 what is the width?

52. A rectangle has the length of 3 and an area of 24 what is the width?

53. 6cm
8cm

54. 6cm
3cm

55. 6cm
4cm

56. 2cm
6cm

57. 2cm
10cm

58. 2cm
12cm