These shapes all have the same area of 9:
It helps to imaginehow much paintwould cover the shape.
There are special formulas for certain shapes:
The width is 5, and the height is 3, so we knoww = 5andh = 3:
We can also put the shape on a grid and count the number of squares:
Example: When each square is1 meteron a side, then the area is15 m2(15 square meters)
The basic unit of area in the metric system is thesquare meter, which is a square that has 1 meter on each side:
Be careful to say square meters not meters squared: