Question

mr. mathews wants to redo the roof on the entire sfm building. to calculate the surface area of the roof, he breaks the building into multiple, varying size rectangles, and calculates the area for each rectangle. in order to calculate the surface area of the roof, what must mr. mathews do with the areas of the individual rectangles? multiply divide subtract add

Explanation:

Step1: Recall area - addition concept

To find the total area of a composite - shaped figure (like the roof made up of multiple rectangles), we use the principle of adding the areas of its component parts.

Step2: Apply to the problem

Since the roof is divided into multiple rectangles and we want the total surface area of the roof, we add the areas of the individual rectangles.

Answer:

Add