If a cylindrical barrel measures 22 inches in
diameter, how many inches will it roll in
8 revolutions along a smooth surface? a.)121π in. b.)168π in. c.)176π in. d.)228π in.

You first need to calculate the circumference as that will give you the distance in one revolution.

Then you multiply the answer you get by 8
 
Circumference = pi*diameter = 22pi 8 revolutions = 8*22*pi = 176pi

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