太原一外小升初奥数考试真题(含答案)
太原奥数网整理
2011-09-27 08:38:47
Look at the picture on the right △ABC,BD=2DC,AE=EC.there are four parts:s1,s2,s3 and s4.
If s3=18cm2,then s4=___cm2
翻译: 三角形ABC,BD=2DC,AE=EC,S3面积18cm2,S4面积?
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