You collect coins one of your favorite coins is a silver-colored coin showing a mans portrait the radius of the con is 12 millimeters what is the diameter of the coin? what is the circumference of the coin? what is the area of the coin

Apassenger train and a freight train leave san jose at 3pm, traveling in the same direction. the passenger train is going three times as fast as the freight train. at 6pm they are 240 miles apart. how fast is each travelling? explain your answer and show your