Mathematics, 19.05.2020 13:01, kaybec2386

Alex crafted a photo frame with the help of 4 identical rectangular cardboard pieces as shown in the figure. If the green area(middle part) represents the 40% of the total area, What is the area of one rectangular cardboard piece?

(Answer in percentage)

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Alex crafted a photo frame with the help of 4 identical rectangular cardboard pieces as shown in the...