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Writer's picturekeshprad

PhysicsBowl 2018 Q17

17) This question asks us to find the surface area — in square centimeters — of a pipe with the given measurements. We can start this problem with a diagram of the pipe.

Where d is diameter, and ℓ is length

We can think of the surface as four parts. Each of the two ends of the pipe, the inside of the pipe, and the outside of the pipe.

Where A is area, d is diameter, and ℓ is length

Answer: D

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