设A、B、C三边分别为7X、5X、3X,
7X+5X+3X=60
X=4
A、B、C三边分别为28、20、12.
已知三角形ABC的边长为A、B、C,周长为60CM,且A:B:C=7:5:3,求A、B、C的长
已知三角形ABC的边长为A、B、C,周长为60CM,且A:B:C=7:5:3,求A、B、C的长
求了!快帮我,后天要交答案了,
求了!快帮我,后天要交答案了,
数学人气:401 ℃时间:2019-10-18 11:35:17
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