如图，长方形ABCD，ABEF，AGHF的长与宽的比相同，且，长方形BEHG的周长是22，求长方形ECDF的面积．
直接写出得数．4÷= 7×= ÷= ×6÷=×= ×16= ÷2= （）×16=．
直接写出下面各题的结果．= = = 902=8π= = 8：10= =
直接写出结果．×12= = = =÷7= 1÷= 12÷= +3÷=
直接写出得数÷3= 6×= += 30÷= ×60= ÷=
直接写得数：×0= 14×= ÷= 1÷== = = 25×（5+）=
，长方形BEHG的周长是22，求长方形ECDF的面积．
= 7×
= 
= 
×6÷
=
×
= 
×16= 
÷2= （
）×16=．
= 
= 
= 902=
= 8：10= 
=
×12= 
= 
= 
=
÷7= 1÷
= 12÷
= 
+3÷
=
÷3= 6×
= 
+
= 30÷
= 
×0= 14×
= 
÷
= 1÷
=
= 
= 
= 25×（5+
）=
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