1. Area – Perimeter - Volume
2nd Year Maths

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

3. Perimeter
Can we think of a more mathematical way of writing an expression for the perimeter?
8cm
Perimeter = 2L + 2W
6cm
6 cm
8cm

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

5. Now find the perimeter of these shapes. They are not drawn to scale.
4cm
3cm
3cm
5cm
7cm
3cm
Perimeter = 18cm
Perimeter = 22cm
Perimeter = 28cm

6. Area - Rectangle
Area of Rectangle = Length x Width (L x W)

7. Area - Triangle
Area of Triangle = ½ Base x Perpendicular Height

8. Area
Make sure your answer is always in units squared.
E.g. cm2 , m2

9. Questions to Complete Page 204/205/206:
Area & Perimeter of Rectangles & Irregular Shapes: Q3, Q7, Q9, Q12,
Area of Triangle: Q16, Q19, Q23, Q24
Combined: Q25
Homework: Page 205: Q4, Q11, Q13
Page 206: Q15, Q21