Question: A rectangular sheet of paper is 21 cm wide. When it is folded in half, with the crease running parallel to the 21-cm sides, the

A rectangular sheet of paper is 21 cm wide. When it is folded in half, with the crease running parallel to the 21-cm sides, the resulting rectangle is the same shape as the unfolded sheet.Find the length of the sheet, to the nearest tenth of a cm.Note: in many places outside of the United States, such as Europe, the shape of notebook paper is determined by this similarity property

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