Homework Help: Math

Posted by Tehila on Thursday, April 22, 2010 at 4:54pm.

For small paving jobs, a contractor uses a roller pushed by a worker.

A roller pushed by a worker (radius=8 in; length=30 in.)

To the nearest square inch, what is the area of pavement with which the surface of the roller will come into contact in one complete rotation?

A 753 in.²
B 1,507 in.²
C 1,708 in.²
D 1,909 in.²

Math - Reiny, Thursday, April 22, 2010 at 5:59pm
length = circumference of roller = 2π(8) = 16π
width = 30

area = 30(16π) = 480π in^2

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