求下面图形的周长和面积。/m7m/z:I3W:};T4[)m'r0V
/m7m/z:I3W:};T4[)m'r0V
算式:提示9V.w/^:D5L(q0`(_9P/m7m/z:I3W:};T4[)m'r0V
答:阴影部分的周长为+s/P+p:E.\8X)j厘米,面积为3b+H,G7t5F'n2s1p平方厘米。/m7m/z:I3W:};T4[)m'r0V
算式:提示1D0L:}-d1~0e,A9v5?1a8Q+U+S.T/m7m/z:I3W:};T4[)m'r0V
答:;半圆的周长为,T3j0F(?;r2c;o/K6F4x(\6{9v9i-H2N厘米,面积为9k+q7E1V6w+}7X*i7P:C平方厘米。/m7m/z:I3W:};T4[)m'r0V