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anonymous
 one year ago
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:
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
anonymous
 one year ago
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: 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

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.068.3 38.4 268.8 230.4

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Marcorie @misssunshinexxoxo @jdoe0001 @dan815

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@mathmate can you please help him

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sorry im not really sure try asking someone else i tried it and got the wrong answer

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i agree with u @CaptainLlama49

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Cool I just might have it right

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.2Well you have the volume of the cylinder which is \[V = \pi r^2 h\] and cone is \[V_c = 1/3 \pi r^2h\] we are given that the height of the hourglass is 18 mm, and the total height within the top portion of the hour glass is 54 mm. It also tells us the radius of the cylinder and the cone is 8mm. So we just need to find the total volume, using the formulas above and once we have that we can just divide by \[10 \pi~ mm^3\] to figure out the time it will take the sand to be at the bottom I assume?

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.2Yeah, so you should be able to figure out the rest

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.2Well lets find the volume of the cone and cylinder first, what did you get?

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.2Well I don't really feel like doing the whole problem, I gave you the process you can plug in the numbers and check.

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.2Haha, so it was right? :)
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