10.一个半圆的直径是4厘米,求他的周长列式是( )
0 163911 163919 163925 163929 163935 163937 163941 163947 163949 163955 163961 163965 163967 163971 163977 163979 163985 163989 163991 163995 163997 164001 164003 164005 164006 164007 164009 164010 164011 164013 164015 164019 164021 164025 164027 164031 164037 164039 164045 164049 164051 164055 164061 164067 164069 164075 164079 164081 164087 164091 164097 164105 199269
A. | 3.14×4÷2 | B. | 3.14×4+4 | C. | 3.14×4÷2+4 |