如图，将矩形ABCD沿GH对折，点C落在Q处，点D落在E处，EQ与BC相交于F，

如图，将矩形ABCD沿GH对折，点C落在Q处，点D落在E处，EQ与BC相交于F，若AD=8cm，AB=6cm,AE=4cm．则△EBF的周长是 cm．

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如图，将矩形ABCD沿GH对折，点C落在Q处，点D落在E处，EQ与BC相交于F，

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