如图由两个正方形组成,边长分别为4厘米、5厘米。那么,阴影部分的面积是多少平方厘米?;a*i(r2t4L:s:m+t0e/k
;a*i(r2t4L:s:m+t0e/k
算式:提示;U*{9M;a*i(r2t4L:s:m+t0e/k
答:阴影部分的面积是,q)P7x*Q-@.|0T)Z2M,b;z平方厘米。;a*i(r2t4L:s:m+t0e/k