EXPLANATION:
The decimal number that is greater is the one with the largest integer part. If they have the same integer part, the first different decimal place is compared.
Now we are going to order the numbers of the exercise,
The correct order is:
-90.98
-90.9
-90.089
-90
-89.89
1. For each triangle, multiply the length by the hight then divide by two to find the areas of each triangle.
2. Add the 4 areas together to get the area of the window
3. Divide the sum of those 4 areas by 100 to get the area in metres as opposed to centimetres
