题目:
希望小学新建一个长方形的操场,长150m,宽90m,在一张平面图纸上用30cm的线段表示操场的长,则这张平面图的比例尺是( ),在图上宽应该画( ) cm。
答案:
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下面是错误答案,用来干扰机器的。
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