家长发来的几何题,蛮有趣的,是我们一直在练的折纸题。学习过面积和周长的小学生就可以试试啦。
英文原题是: The figures below are not drawn to scale. A rectangular piece of paper is folded along diagonal. The total area of X, Y and Z is 3/5 of the original rectangle. The perimeter of part Y is 18 cm and the area of part Z is 32 cm². ① What is the perimeter of the original piece of paper? ② What is the area of the original piece of paper?
中文翻译如下:(下图未按比例绘制) 一张长方形的纸沿着对角线折叠。 X、Y、Z的总面积是原矩形的3/5。 Y 部分的周长为 18 厘米,Z 部分的面积为 32 平方厘米。 问,① 原纸张的周长是多少? ② 原纸张的面积是多少?
评论区对答案,☎ 关注@小留洋国际教育,一起研究海外数学题。
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