In the fihure ,the length of rectangle ABCD is 3 times its width.find the value of m
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In the fihure ,the length of rectangle ABCD is 3 times its width.find the value of m
题目的意思是长是宽的3倍,求m.所以根据这个列方程就可以了:
由于长平行于x轴,所以长度就是用B的横坐标减去C的坐标,得长=6-(1-m)=m+5
同理宽度就是A的纵坐标减去B的,就是:(m+1)-(10-2m)=3m-9
所以有m+5=3*(3m-9)
解得m=4
在一下图形中,长方形ABCD的长石宽的三倍,请找出M的数值
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In the fihure ,the length of rectangle ABCD is 3 times its width.find the value of m
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