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Plane Shapes III | Week 87 Topics1 Quiz
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Decimals and Percentages I | Week 92 Topics1 Quiz
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Decimals and Percentages II | Week 103 Topics1 Quiz
Lesson Progress
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Topic Content:
- Meaning of Perimeter
A perimeter can be defined as the outside path or the outside boundary that surrounds a plane shape. It can also be defined as the length of the outline of a shape.
How Do You Find the Permiter of a Shape?
The simplest way to find a perimeter is by using a ruler to measure the length of the sides of a small regular or irregular shape. The perimeter is determined by adding the lengths of the sides/edges of the shape.
The perimeter of all shapes can be determined by adding the lengths of their sides/edges.
Perimeter of regular shape = 4 cm + 4 cm + 4 cm + 4 cm
Therefore, Perimeter = 16 cm
Perimeter of irregular shape = 6 cm + 8 cm + 4 cm + 5 cm + 1 cm + 4 cm
Therefore, perimeter = 28 cm
