求下面图形的周长和面积。'T.~0\8J)}6i6c6?(y4F
'T.~0\8J)}6i6c6?(y4F
算式：提示9Z;m1c'e7c-p'T.~0\8J)}6i6c6?(y4F
答：半圆的周长为5N4T+s(u厘米，面积为,?(e1r:z-c9B0n+M平方厘米。'T.~0\8J)}6i6c6?(y4F