Areas of rectangles and squares: |
We know can count squares to find the
areas of shapes.
This particularly works with squares and rectangles. If each square is 1cm long, the area of the rectangle is 6cm². The area of the square is 4cm². |
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| But for shapes like these, there is a
link between the length and width of the shape, and its area.
The rectangle is 3cm long and 2cm wide. Its area is 6cm². The square is 2cm by 2cm. Its area is 4cm². See the link? You multiply the length and width to get the area!! |
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We can write this as a general rule:
Area of rectangle or square You can also do the opposite, and use the area to find the length or width of a side. Length = Area ÷ Width See the animation. Remember for a square, length = width. |
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Test Yourself Now!!