SOLUTION: The inner circumference of a circular race truck is 352m.The truck is everywhere 2.5m wide. Calculate the cost of (I) levelling the truck at the rate of 1.80 per m^2.

Question 1079870: The inner circumference of a circular race truck is 352m.The truck is everywhere 2.5m wide. Calculate the cost of (I) levelling the truck at the rate of 1.80 per m^2. (II) putting up a fence along the fence along the outer circle of 3.25 per m
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The inner circumference of a circular race truck is 352m. The truck is everywhere 2.5m wide. Calculate the cost of (I) leveling the truck at the rate of 1.80 per m^2. (II) putting up a fence along the fence along the outer circle of 3.25 per m
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The inner circumference of a circular race truck is 352m.
Find the radius of the inside.
C = 2pi*r1 = 352
r1 = 176/pi meters.
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The outside radius r2 = 2.5 + 176/pi meters
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Calculate the cost of (I) leveling the truck at the rate of 1.80 per m^2.
The area of the track is the area of the outside circle minun the area of the inside circle.
Area = pi*(r2)^2 - pi*(r1)^2
Cost = 1.8*Area
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(II) putting up a fence along the fence along the outer circle of 3.25 per m
Outside circumference = 2pi*r2
Cost = 3.25*C
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