1. Simple Areas Definition : Area is “ how much space a shape takes up”
A few types of special Areas
Revision of Square, Rectangle and Triangle
Rhombus and kite
Parallelogram
Trapezium
Tuesday, 13 November 2018
Created by Mr.Lafferty
Composite shapes

2. Starter Questions Q1. Is the solution to the equation x = -3 Explainao
Q2. Are the missing angles
ao = 45o and bo = 55o bo
Q3. Explain why the mean is equal to 12
16, 9, 15,8
Q4. How many difference ways can you find
Tuesday, 13 November 2018
Created by Mr.Lafferty

3. Revision of Area www.mathsrevision.com Learning Intention
Success Criteria
1. To revise the basic areas including square, rectangles and RAT’s.
To remember the area formula for the square, rectangle and Triangle.
Apply formulae correctly.
(showing working)
Answer containing
appropriate units
Tuesday, 13 November 2018
Created by Mr.Lafferty

4. Revision of Area The Square The Rectangle The RATb h l l b
Area = l x l
Area = l x b
Area = ½b x h
Perimeter = 4 x l
Perimeter = 2l + 2b
Tuesday, 13 November 2018
Created by Mr.Lafferty

5. Created by Mr. Lafferty Maths Dept.
Area of a Rectangle
Example
Find the area of the rectangle opposite
B = 2cm
L = 9cm
Area = Length x Breadth
A = L x B
A = 9 x 2
A = 18 cm2
Demo
13-Nov-18
Created by Mr. Lafferty Maths Dept.

6. Perimeter Problem x = 12 – 9 =3 m Perimeter
Below is a drawing of a school building. Calculate the perimeter.
4 m
9 m
8 m
x m
12 m
x = 12 – 9 =3 m
Perimeter =
= 40 m
13-Nov-18
Created by Mr. Lafferty Maths Dept.

7. Triangle Area Example : Find the area of the triangle.
6cm
8cm
Tuesday, 13 November 2018
Created by Mr.Lafferty

8. Created by Mr. Lafferty Maths Dept.
Area
Now try TJ3a
Ex 1
Ch8 (page 67)
13-Nov-18
Created by Mr. Lafferty Maths Dept.

9. Starter Questions Q1. Calculate www.mathsrevision.com
Q2. Are the missing angles 70o,40o,40o (Explain your answer)
Q3. Is 180 the HCF of 10 and 36 ? (Explain your answer)
Q4. The solution to an equation is 5.
What is the equation.
Tuesday, 13 November 2018
Created by Mr.Lafferty

10. Rhombus and Kite Area www.mathsrevision.com Learning Intention
Success Criteria
1. To develop a single formula for the area of ANY rhombus and Kite.
To remember the formula for the area of ANY rhombus and kite.
Apply formulae correctly.
(showing working)
Answer containing
appropriate units
Tuesday, 13 November 2018
Created by Mr.Lafferty

11. Area of a Rhombus Rectangle Area = D x d d www.mathsrevision.com D
You have 2 minutes to come up with the formula for the area of any rhombus.
Area of a Rhombus d D
Rectangle Area = D x d
Tuesday, 13 November 2018
Created by Mr.Lafferty

12. Area of a Kite Rectangle Area = D x d d www.mathsrevision.com D
You have 2 minutes to come up with the formula for the area of any kite.
Area of a Kite d D
Rectangle Area = D x d
Tuesday, 13 November 2018
Created by Mr.Lafferty

13. Rhombus and Kite Area 2cm 4cm www.mathsrevision.com 5cm 9cm
Example : Find the area of the shapes.
2cm
4cm
5cm
9cm
Tuesday, 13 November 2018
Created by Mr.Lafferty

14. Rhombus and Kite Area Example : Find the area of the V – shape kite.
4cm
7cm
Tuesday, 13 November 2018
Created by Mr.Lafferty

15. Created by Mr. Lafferty Maths Dept.
Area
Now try TJ3a
Ex 2
Ch8 (page 69)
13-Nov-18
Created by Mr. Lafferty Maths Dept.

16. Starter Questions Q1. Is the area of the rhombus equal to 10.5cm2
Explain your answer.
6cm
7cm
Q2. Show that there are 2880 minutes in 2 days
Q3. Expand 2p( y - 3p) – 2py
Q4. Calculate
Tuesday, 13 November 2018
Created by Mr.Lafferty

17. Parallelogram Area www.mathsrevision.com Learning Intention
Success Criteria
1. To develop a formula for the area of a parallelogram.
To remember the formula for the area of a parallelogram.
Apply formula correctly.
(showing working)
Answer containing
appropriate units
Tuesday, 13 November 2018
Created by Mr.Lafferty

18. Parallelogram Area Important NOTE h = vertical height hb
Tuesday, 13 November 2018
Created by Mr.Lafferty

19. Parallelogram Area Example 1 : Find the area of parallelogram. 3cm
9cm
Tuesday, 13 November 2018
Created by Mr.Lafferty

20. Created by Mr. Lafferty Maths Dept.
Area
Now try TJ3a
Ex 3
Ch8 (page 72)
13-Nov-18
Created by Mr. Lafferty Maths Dept.

21. Starter Questions Q1. Find the area of the parallelogram8 7
Q2. Is the HCF 6 and Explain your answer.
Q3. Show that 11.5 % of 150 is 17.25
Q4. Simplify 3(h -2) + h(2 - 4h) = -4h2 + 6h - 6
Tuesday, 13 November 2018
Created by Mr.Lafferty

22. Trapezium Area www.mathsrevision.com Learning Intention
Success Criteria
1. To develop a formula for the area of a trapezium.
To remember the formula for the area of a trapezium.
Apply formula correctly.
(showing working)
Answer containing
appropriate units
Tuesday, 13 November 2018
Created by Mr.Lafferty

23. Trapezium Area a cm Two triangles WXY and WYZ X Y 1 h cm2 W Z
b cm
Tuesday, 13 November 2018
Created by Mr.Lafferty

24. Trapezium Area Example : Find the area of the trapezium. 5cm
6cm
Tuesday, 13 November 2018
Created by Mr.Lafferty

25. Created by Mr. Lafferty Maths Dept.
Area
Now try TJ3a
Ex 4
Ch8 (page 74)
13-Nov-18
Created by Mr. Lafferty Maths Dept.

26. Starter Questions Q1. Find the area of the trapezium9
Q1. Find the area of the trapezium 8
Q2. Is the HCF for 4 and 12 equal to 2.
Explain your answer. 7
Q3. Find 6.5% of 60
Q4. Is 3(f – 4) - 4f = 7f -12 Explain your answer
Tuesday, 13 November 2018
Created by Mr.Lafferty

27. Composite Areas www.mathsrevision.com Learning Intention
Success Criteria
1. To show how we can apply basic area formulae to solve more complicated shapes.
To understand the term composite.
2. To apply basic formulae to solve composite shapes.
Answer containing
appropriate units
Tuesday, 13 November 2018
Created by Mr.Lafferty

28. Composite Areas We can use our knowledge of the basic areas
to work out more complicated shapes.
Example 1 : Find the area of the arrow.
5cm
3cm
6cm
4cm
Tuesday, 13 November 2018
Created by Mr.Lafferty

29. Composite Areas Example : Find the area of the shaded area.
8cm
11cm
4cm
10cm
Tuesday, 13 November 2018
Created by Mr.Lafferty

30. Area Now try TJ3a Ex 5 Ch8 (page 75) www.mathsrevision.com
Have you updated your Learning Log ?
Area
Now try TJ3a
Ex 5
Ch8 (page 75)
Are you on Target ?
I can ?
13-Nov-18
Created by Mr. Lafferty Maths Dept.