- Method 2
We know the steps are identical since they have the same dimensions.
Hence, we can divide the figure into small, identical rectangles that have the same dimensions as one step.
This is the figure that we will get.
So, how do we find the area using this figure?
We can simply count the number of small rectangles in the figure and then take this number multiplied by the area of each small rectangle.
So, let’s count the number of small rectangles.
There are 21 small rectangles in the figure.
Next, we find the area of each small rectangle.
42 multiplied by 21 gives us 882 square centimetres.
Finally, we find the area of the figure by taking 882 multiplied by 21.
This works out to 18 522 square centimetres.
Therefore, the area of the figure is 18 522 square centimetres.
This method also involves dividing the figure into basic shapes, but in this method the figure was divided into basic shapes that are identical.
Hence, less calculation is involved and the working is much simpler.
Is there any other method to find the area of this figure?