The total area of a compound shape is found by adding up the areas of the rectangles that have created the whole shape. This may be done in more than one way. The calculation may use a subtraction of ...

Want to find the area of shapes based on rectangles? Estimate the area of a shape based on rectangles on a grid. Next, place rows and columns of squares inside two rectangles to work out the correct ...

The perimeter is the total distance around the edge of a 2D shape. Examples of units of distance are millimetres (mm), centimetres (cm) and metres (m). The perimeter of any 2D shape can be found by ...