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KimJaFo
 one year ago
An hourglass, composed of two identical cones, is 12 cm tall. The radius of each cone is 3 cm. If
you want to fill the bottom half of the hourglass 2/3 full of salt, how much salt will you need?
Explain the method you would use to find the amount of salt.
I just need to know how to solve this, I have completely forgotten.
KimJaFo
 one year ago
An hourglass, composed of two identical cones, is 12 cm tall. The radius of each cone is 3 cm. If you want to fill the bottom half of the hourglass 2/3 full of salt, how much salt will you need? Explain the method you would use to find the amount of salt. I just need to know how to solve this, I have completely forgotten.

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DanJS
 one year ago
Best ResponseYou've already chosen the best response.1The volume of the cone is V = (1/3) * pi * r^2 * h

KimJaFo
 one year ago
Best ResponseYou've already chosen the best response.0I got 1017.8, is that correct?

KimJaFo
 one year ago
Best ResponseYou've already chosen the best response.02/3 of that is 678.5 I think.

DanJS
 one year ago
Best ResponseYou've already chosen the best response.1\[\frac{ 1 }{ 3 }*3.14 * 9 * 12 \approx 113.04\]

DanJS
 one year ago
Best ResponseYou've already chosen the best response.12/3 of that is 75.36 cm^3

KimJaFo
 one year ago
Best ResponseYou've already chosen the best response.0oh, geez, my math was off.
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