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Mathematics 8 Online
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?

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.

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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