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OpenStudy (anonymous):
A project manager placed an order for ball bearings for some heavy duty manufacturing machinery. What is the surface area in square millimeters of one of these bearnings if it has a diameter of 0.8 inches?
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OpenStudy (mertsj):
SA=4pir^2
OpenStudy (mertsj):
SA=4pi(.4)^2 SA=.64pi = 2.01 mm^2
OpenStudy (anonymous):
my software isnt accepting the answer
OpenStudy (mertsj):
Well read the directions for the form the answer is supposed to be in.
OpenStudy (mertsj):
Oh no. There is a unit conversion involved.
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OpenStudy (mertsj):
2.01 in^2 has to be converted to mm^2
OpenStudy (anonymous):
ok i got it thanks
OpenStudy (mertsj):
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