I need help understanding how to find each of these problems.

9.After one roation of the wheel, how many inches further has the truck with the larger tires traveled than the truck with the Factory-installed tires?

10.Use the results from the above table to calculate the following:If the odometer reading is 100,000 miles with the larger tires, approximately what is the actual mileage?If the speedomtere reading is 70mph, what is the actual speed?

11.If the truck, with the larger tires, is getting 14 miles per gallon, what would the mileage be with the factory installed tires?

12.Work backwards and come up with a tire size that would give a circumference of apporxiably 120 inches.