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矩形ABCD的周长是56cm,对角线AC、BD相交于点O,△OAB与△OBC的周长差是4cm,则矩形ABCD中较短的边长是
矩形ABCD的周长是56cm,对角线AC、BD相交于O,△OAB与△OBC周长的差是4cm,则矩形ABCD中较短边长是________.
矩形ABCD的周长为56cm,对角线AC、BD交于O,△AOB和△BOC的周长差是4cm,则矩形各边的长为______.