A triangular prism has a triangular base with an area of 6 square centimeters and a perimeter of 12 centimeters. The volume of the prism is 18 cubic centimeters. What is the surface area of the prism?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?