Finding wieght of a car using pressure?

Question

Mike has set the gague pressure of the tire of his car to 36.0 psi (lb/in^2). He draws chalk lines around the edges of the tires where they touch the driveway surface to measure the area of contact between the tires and the ground. Each front tire has a contact area of 24 in^2 and the rear wheels have a contact area of 20 in^2. What is the weight in lbs of the car?

Answer 1

Assuming a constant pressure of the tire on the driveway, the answer is

W = ΣP*A