Wall posters are usually sold curled up in cylindrical cardboard tubes. If the length of the tube is 84.5 cm, and the diameter of the tube is 2.40 cm, what is the area of the poster, in cm2? (Assume the poster doesn't overlap itself.)

A) 1529 cm2
B) 203 cm2
C) 637 cm2
D) 382 cm2
E) 605 cm2


C

Physics & Space Science

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From the point of view of an observer on the earth, a muon produced high in the atmosphere can reach the ground before decaying because

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