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Study Guide : Perimeter and area

Learner Guide



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Perimeter and Area

The perimeter of a shape is the distance around the outside of it– it would be

measured in distance such as millimetres, centimetres, metres or kilometres.


The easiest way to find perimeter is to choose a point, then travel around the

shape adding on the lengths of each side.


Example 1.

   If we start from the corner marked with an X and move clockwise, this would be the sum –11+6.5+8+4 = 29.5 cm


The area of a shape is the amount of space covered inside the shape.

It can be measured in units such as mm2 , cm2 etc.

The area of a rectangle is found by multiplying the length by the width.


 Example 2.

7 x 5 = 35 therefore, the area is 35cm 2

We can find the area of the shape by multiplying the length, 7cm, by the width, 5cm.


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Related Topics

Ratio-and-proportion                      Money

Negative-numbers                            Coordinates-and-position


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