There are very many countries that use a dollar as its currency unit and have a half-dollar coin. You have not specified which country you mean and so it is not possible to give an answer.
Chat with our AI personalities
The radius of the circle is half the diameter of the circle. 30mm radius would mean 60mm diameter or 6cm.
The volume is 3,800.8 cubic centimeters.
54 cm
Well, honey, if the diameter is 12 cm, all you gotta do is cut that bad boy in half to get the radius. So, the radius would be 6 cm. Easy peasy lemon squeezy!
Radius Radius