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A typical 3-D printer creates objects by laying down layers of ink one on top of another. The average thickness of a layer depends on the caliber of the printer. For one particular 3-D printer, the average thickness of a layer is 102 µm (micrometers). When creating a 1-inch cube, the printer takes 6 seconds to lay down each layer of ink. Approximatley how long should it take this printer to create a 1-inch cube? (There are 1,000,000 micrometers in a meter, and 1 inch is approximatley equal to 0.0254 meters.)

 

a) 12 minutes

b) 25 minutes

c) 40 minutes

d) 1 hour, 6 minutes

 

Thanks 

 Jan 21, 2017
edited by Guest  Jan 21, 2017
edited by Guest  Jan 21, 2017
edited by Guest  Jan 21, 2017
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[( 1,000,000 * 0.0254 ) /102] * 6 sec  =

 

1494.1176470588235294 sec  / 3600 sec ≈ 0.4150 hr  * 60 min  = 

 

24.9 min  ≈   25 min

 

 

cool cool cool

 Jan 21, 2017

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