如图,圆的周长为15.7分米,圆的面积是长方形的2/3,图中阴隐部分周长是多少平方分米?)U3p/v5K7@
)U3p/v5K7@
算式:提示0W:G(R)U3p/v5K7@
答:图中阴影部分的周长是6{,|7o3M'M9~/y']5W0{分米。)U3p/v5K7@