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30 June, 14:15

Linda has a rectangular cardboard of length 78 cm and perimeter 268 cm. She cuts a part of the cardboard to make a cubical box 15 cm long. What is the area of the cardboard left?

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  1. 30 June, 14:17
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    The answer is 3018 cm². The original rectangle has a side length of 56 so its area is 4368. The area of the box is 1350. You subtract the two to get the answer.
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