求下列图中阴影部分的面积。8y0h4D3\(]'M0O'{
8y0h4D3\(]'M0O'{
算式：提示.g5F,U4J2^(F8y0h4D3\(]'M0O'{
答：阴影部分的面积-t,K8x,r)k7S6G8_)V(O平方厘米。8y0h4D3\(]'M0O'{