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Your car's fuel efficiency is e = 41 miles per gallon. The fuel pump pulls fuel from the tank at a speed v equal to the speed of the car itself. The fuel is pulled through a hose with cross-sectional area A. What is the cross-sectional area of the scoop in square inches? What is it in square millimeters? (1 gallon = 231 in 3.)

- in^ 2

- mm^2
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Added Thu, 25 Jun '15
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Cars fuel effieciency = 41

Volume pulled = velocity * area
1 * 231 = 41 *160934* A

So the area will be in cm^2 = 231/41* 160934
here 1 mile = 160934 centimeters
Area in mm^2 = 231/ ( 41 * 160934) * 100

= 0.0035 mm^2
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Added Thu, 25 Jun '15
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