Somebody help me with this

30 points ☺️

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.

What is the measure of the smallest angle in the diagram? 15 29 32 45

What’s the volume of the triangular prism?