Anumber changed to 12.6 after it was rounded. to what place was the number rounded

You are cycling around europe with friends. a cycling festival is starting soon in barcelona. it will take 4.5 hours to cycle there. how many minutes in total is this?

The verbal translation for the difference of m and 7 increased by 15

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie