1
The length of a rectangular cardboard is four times as long as its width. The width of the cardboard is 50 cm. Father cuts out one part of the cardboard which has an area of 5,700 cm2. What is the area of the cardboard that is left?
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- 3,200 cm2
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- 4,300 cm2
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- 4,800 cm2
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- 5,200 cm2