13. In Figure ABCD, there are 6 identical rectangles. Study the figure carefully and find the total shaded area.
Area of ABCD.
30 x 18 = 540
Find the length and breadth of each small rectangle.
18 ÷ 3 = 6
6 x 2 = 12
Find the area of each rectangle and the 6 rectangles.
12 x 6 = 72
72 x 6 = 432
540 – 432 = 108 cm2.
The total shaded area is 108 cm2.
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