📖Definition
The Area of a shape is the amount of space it takes up.
You need to know how to work out the area of a few basic 2D shapes. With this knowledge you'll be able to work out the area of more complex shapes.
Rectangle
The Area of a Rectangle with sides lengths a, b is ab
Triangle
The Area of a Triangle is given by the formula 1/2 Base x Perpendicular Height
Diagram
Compound Shapes
Compound Shapes are made up of a number of smaller, simpler shapes.
The key is to break the shape down into its constituent parts, work out the area of each part and then sum the areas up.
💡Tips/hints
It's a good idea to draw a diagram showing the constituent smaller shapes.
✏️Example
A rectangular table top is 3.5 m² in area. If the table is 2m long, how wide is it?
✅Solution
Area of a rectangle is Length x Width.
So, 3.5 = 2 x Width
Width = 3.5 ÷ 2 = 1.75m