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Each tire supports 2100 N, and the pressure exerted by each tire is 20 N per centimeter2, so Pressure = Force / Area Pressure = 20 N per centimeter2 Force = 2100 N rearranging the equation for Area Area = Force / Pressure Area = 2100 / 20 = 105 centimeter2 So each tire has 105 cm2 touching the road.

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