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Divide the figure into 2 rectangles as shown
The area of the rectangle I is : 2 x 2 = 4 (cm2)
The width of the rectangle II is : 5 - 2 = 3 (cm)
The area of the rectangle II is : 3 x 8 = 24 (cm2)
The area of the figure is : 4 + 24 = 28 (cm2)
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