Mathematics for IGCSE & O level - Mensuration (Section 13 - No. 32)
If a shape is made up of a rectangle and a triangle, how would you find its total area?
Subtract the area of the triangle from the area of the rectangle.
Multiply the areas of the rectangle and the triangle.
Add the area of the rectangle and the area of the triangle.
Divide the area of the rectangle by the area of the triangle.
Explication
To find the total area of a composite shape, you add the areas of its individual components.