anonymous
  • anonymous
PLEASE HELP! I ALWAYS MEDAL :) An hourglass consists of two sets of congruent composite figures on either end. Each composite figure is made up of a cone and a cylinder, as shown below: Hourglass with sand measuring 54 millimeters high Each cone of the hourglass has a height of 18 millimeters. The total height of the sand within the top portion of the hourglass is 54 millimeters. The radius of both cylinder and cone is 8 millimeters. Sand drips from the top of the hourglass to the bottom at a rate of 10π cubic millimeters per second. How many seconds will it take until all of the sand has
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
arivillafana
  • arivillafana
64pi * (54-18) + 64pi * 18/3 --------------- equals total volume
arivillafana
  • arivillafana
hope that helped

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anonymous
  • anonymous
im still a little confused.. so its 18/3?
arivillafana
  • arivillafana
I believe so
anonymous
  • anonymous
ok.. thank you :)
arivillafana
  • arivillafana
no problem :D

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