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Annahasbeenillinhospitalforthreeweeks.(用since改写句子)如图,一块长方形绿地长100m,宽50m,在绿地中开辟两条道路后,道路宽都为x,绿地面积缩小到原来的88.32%,求x

题目详情
Anna has been ill in hospital for  three  weeks .(用since改写句子)
如图,一块长方形绿地长100m,宽50m,在绿地中开辟两条道路后,道路宽都为x,绿地面积缩小到原来的88.32%,求x






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答案和解析
Anna has been ill in hospital since three weeks ago.100×50-50X-100X+X²=50×100×88.32%
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