求阴影部分的面积。（单位：厘米）,a:N0D5N,R1G'A
,a:N0D5N,R1G'A
算式：提示9y2a(O6v'G8Z/F1Z(?:D.k(~8F+\;O+c.T5G2G5c,a:N0D5N,R1G'A
答：阴影部分的面积是7B5e;B)g:O2H4i(E5w+]8w平方厘米。,a:N0D5N,R1G'A
,a:N0D5N,R1G'A