求下面图形的周长和面积。(W;U9p*A6s:o,{7Y
(W;U9p*A6s:o,{7Y
算式：提示'~4@3h.Z([0x,i0U7_4y*I+d+G'c(W;U9p*A6s:o,{7Y
答：阴影部分的周长为+G9I({6?厘米，面积为+_8u2|5W4B5N2l5V8c平方厘米。(W;U9p*A6s:o,{7Y