求阴影部分的周长和面积。(单位:厘米)3~)V*J7J9t3j8I(|5q4r:s7_2I
3~)V*J7J9t3j8I(|5q4r:s7_2I
算式:提示9G5X1o3~)V*J7J9t3j8I(|5q4r:s7_2I
答:阴影部分的周长8n/v/a6M)C:V2T-`0P-u;?2`厘米、面积-F9n/r7L(X.r9A平方厘米。3~)V*J7J9t3j8I(|5q4r:s7_2I