如图,四边形DEFG为△ABC的内接矩形,∠A=90°,D在AB上,G在AC上,EF在斜边BC上,AB=3,AC=4(1)当矩形DEFG的周长为27/4(27:4)时,求BE,FC的长(2)当S△DEB+S△GFC=25/6(25:6)时,求矩形DEFG的周长用相似、比例之类的
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![如图,四边形DEFG为△ABC的内接矩形,∠A=90°,D在AB上,G在AC上,EF在斜边BC上,AB=3,AC=4(1)当矩形DEFG的周长为27/4(27:4)时,求BE,FC的长(2)当S△DEB+S△GFC=25/6(25:6)时,求矩形DEFG的周长用相似、比例之类的](/uploads/image/z/2777388-60-8.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9B%9B%E8%BE%B9%E5%BD%A2DEFG%E4%B8%BA%E2%96%B3ABC%E7%9A%84%E5%86%85%E6%8E%A5%E7%9F%A9%E5%BD%A2%2C%E2%88%A0A%3D90%C2%B0%2CD%E5%9C%A8AB%E4%B8%8A%2CG%E5%9C%A8AC%E4%B8%8A%2CEF%E5%9C%A8%E6%96%9C%E8%BE%B9BC%E4%B8%8A%2CAB%3D3%2CAC%3D4%281%29%E5%BD%93%E7%9F%A9%E5%BD%A2DEFG%E7%9A%84%E5%91%A8%E9%95%BF%E4%B8%BA27%2F4%EF%BC%8827%3A4%EF%BC%89%E6%97%B6%2C%E6%B1%82BE%2CFC%E7%9A%84%E9%95%BF%282%29%E5%BD%93S%E2%96%B3DEB%2BS%E2%96%B3GFC%3D25%2F6%EF%BC%8825%3A6%EF%BC%89%E6%97%B6%2C%E6%B1%82%E7%9F%A9%E5%BD%A2DEFG%E7%9A%84%E5%91%A8%E9%95%BF%E7%94%A8%E7%9B%B8%E4%BC%BC%E3%80%81%E6%AF%94%E4%BE%8B%E4%B9%8B%E7%B1%BB%E7%9A%84)
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