Mathematics for IGCSE & O level - Mensuration (Section 7 - No. 30)
How do you determine the area of a compound shape made of rectangles?
Find the perimeter of each individual rectangle and add them up.
Split the shape into smaller rectangles, calculate the area of each, and sum the areas.
Multiply the longest length by the shortest width.
Divide the total length of the shape by 2.
Explication
The area of a compound shape is found by dividing into simpler shapes and summing their areas.