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**1. Homework Statement**

The gauge pressure in each of the four tires of an automobile is 240 kPa. If each tire has a "footprint" of 220 cm2, estimate the mass of the car.

**2. Homework Equations**

F= ma ?

W1 = P1A1 ?

**3. The Attempt at a Solution**

total weight = W1+W2+W3+W4 = P(A1+A2+A3+A4) <------- since all tires have same surface area and same pressure.

240pka(2.2m^3 x 4) = 2112 kg??

dont think i did that right