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13-05-2016
Mathematics

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The portion of a student’s ballpoint pen that contains the ink is a cylinder with a diameter of 0.400 cm and a height of 11.5 cm. If the ink lasts 7 weeks, what is the volume of ink that the student uses each week?

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WestedCrean WestedCrean

13-05-2016

Volume of all of the ink is (0.2^{2})* \pi * 11,5 = 0.46 cm^{3} . When we divide the volume by 7, we get 0.0657142857 cm^{3} of ink

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