A parking lot measures 11m by 6m.The lot is enlarged by paving a uniform border alont 3 sides of the originial lot.Find the width of the newly paved border if the total area of the new lot is 120 metres squared.请写出演算过程.
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![A parking lot measures 11m by 6m.The lot is enlarged by paving a uniform border alont 3 sides of the originial lot.Find the width of the newly paved border if the total area of the new lot is 120 metres squared.请写出演算过程.](/uploads/image/z/10329494-14-4.jpg?t=A+parking+lot+measures+11m+by+6m.The+lot+is+enlarged+by+paving+a+uniform+border+alont+3+sides+of+the+originial+lot.Find+the+width+of+the+newly+paved+border+if+the+total+area+of+the+new+lot+is+120+metres+squared.%E8%AF%B7%E5%86%99%E5%87%BA%E6%BC%94%E7%AE%97%E8%BF%87%E7%A8%8B.)
A parking lot measures 11m by 6m.The lot is enlarged by paving a uniform border alont 3 sides of the originial lot.Find the width of the newly paved border if the total area of the new lot is 120 metres squared.请写出演算过程.
A parking lot measures 11m by 6m.The lot is enlarged by paving a uniform border alont 3 sides of the originial lot.Find the width of the newly paved border if the total area of the new lot is 120 metres squared.
请写出演算过程.
A parking lot measures 11m by 6m.The lot is enlarged by paving a uniform border alont 3 sides of the originial lot.Find the width of the newly paved border if the total area of the new lot is 120 metres squared.请写出演算过程.
设三个方向同时扩展x米.有两种方案
第一:一条11m的边保持不动,则方程为(11+2x)(6+x)=120
第二:一条6m的边保持不动,则方程为(6+2x)(11+x)=120
两个方程都可以解出来.然后也就知道新的边界长度了.
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