Helen drives 195miles in 3 hours
what is her average speed in mph

In the diagram below what is the approximate length of the minor arc ab

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

With number 11 ( show how you got the answer)