一个圆的周长是12.56厘米,半径是2厘米,面积是______平方厘米.
3.14×22=12.56(平方厘米);
答:圆的面积是12.56平方厘米.
故答案为:12.56.
Where should the GMDSS radio log be kept on board ship().
A.In the Captain's office
B.In the sea cabin
C.At the GMDSS operating position
D.Anywhere on board the vessel
虚拟传真通讯费为:本地传真()/分钟,国内长途传真()/分钟。