Use rectangular paper of 4cm in length and 3cm in width to make a square. What is the minimum side length of the square? At least how many rectangular papers can make a square
The least common multiple of 3 and 4 is 12, so the minimum side length of the square is 12 cm
12×12÷(3×4)=12
A: at least 12 rectangles are needed to form a square
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