\(( 1).\)计算:\({{(\sqrt{3}-2)}^{2016}}\cdot {{(\sqrt{3}+2)}^{2017}}=\)_________.
\((2\) \().\)如图,矩形\(ABCD\)的对角线相交于点\(O\),\(∠AOB=120^{\circ}\),\(BD=6\),则\(AB\)的长是_________.
\((3\) \().\)如图,平行四边形\(ABCD\)中,点\(E\)在边\(AD\)上,以\(BE\)为折痕,将\(\triangle ABE\)向上翻折,点\(A\)正好落在边\(CD\)上的点\(F\)处,若\(\triangle DEF\)的周长为\(8\),\(\triangle CBF\)的周长为\(18\),则\(FC\)的长为______.
\((4\) \().\)如图所示的一块地,\(∠ADC=90^{\circ}\),\(AD=12\)\(m\),\(CD=9\)\(m\),\(AB=39\)\(m\),\(BC=36\)\(m\),则这块地的面 积为_______\(m\)\({\,\!}^{2}\).
\((5\) \().\)如图,矩形\(ABCD\)中,\(AB=1\),\(AC=2\),对角线\(AC\)、\(BD\)相交于点\(O\),直线\(EF\)过点\(O\),交 \(BC\)于点\(E\),交\(AD\)于点\(F.\)若四边形\(AECF\)恰好为菱形,则\(∠FOD=\)______.
\((6\) \().\)如图,在\(\triangle ABC\)中,\(∠BAC > 90^{\circ}\),\(AB\)的垂直平分线\(MP\)交\(BC\)于点\(P\),\(AC\)的垂直平分线\(NQ\)交\(BC\)于点\(Q\),连接\(AP\),\(AQ\),若\(\triangle APQ\)的周长为\(20\)\(cm\),则\(BC\)为______\(cm\).