# Need help figuring something out(math)

**URL:** <https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938>\
**Category:** NYSpeed Off Topic\
**Created:** [January 16, 2008, 1:37pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938 "2008-01-16T13:37:44Z")\
**Posts on this page:** 18\
**Page:** 1

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**Author:** ![suzukiriderman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/suzukiriderman/32/7421_2.png) [@suzukiriderman](https://forums.speedlife.net/u/suzukiriderman)\
**Post date:** [January 16, 2008, 1:37pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/1 "2008-01-16T13:37:44Z")

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This a simple problem for someone that actually remembers how to figure it out. I have a 5 gallon bucket and I need to figure out how high to fill it for it to be a square foot. It’s diameter is 32.5" at the bottom and gets only slightly wider going up.(I’m not worried about being that accurate)

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**Author:** ![LAFENGAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lafengas/32/7573_2.png) [@LAFENGAS](https://forums.speedlife.net/u/LAFENGAS)\
**Post date:** [January 16, 2008, 1:53pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/2 "2008-01-16T13:53:30Z")

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you need the I.D. of the bucket at the bottom, I.D. of the bucket at the Top, and the distance between those 2 I.D. measurments in order to have enough info.

“slightly wider” is a rough opinion

plus @ 32.5" diameter… is a pretty short 5 gallon bucket.

32.5" Circumference?

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [January 16, 2008, 1:55pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/3 "2008-01-16T13:55:26Z")

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A 5 gallon bucket who’s diameter is 32.5? That means the bucket is only 1.39 inches tall. LOL.

also, square foot is a measure of area. Do you mean Cubic foot?

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**Author:** ![OfficerK](https://avatars.discourse-cdn.com/v4/letter/o/4da419/32.png) [@OfficerK](https://forums.speedlife.net/u/OfficerK)\
**Post date:** [January 16, 2008, 1:56pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/4 "2008-01-16T13:56:40Z")

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Pi^radius square times height for the volume…go from there

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [January 16, 2008, 2:04pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/5 "2008-01-16T14:04:07Z")

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If you mean cubic foot, this is the formula you want to use:

Height to fill to = 2191/(diameter^2)

where your diameter is in inches…

If you want to be more accurate you would actually use a calculus derived equation that describes the volume of a frustum cone. This gets a little uglier than i think you want to get…

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**Author:** ![Zoidberg](https://avatars.discourse-cdn.com/v4/letter/z/d78d45/32.png) [@Zoidberg](https://forums.speedlife.net/u/Zoidberg)\
**Post date:** [January 16, 2008, 2:04pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/6 "2008-01-16T14:04:25Z")

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2.08299’’ ?  
Vol=Pi r^2 h  
1=Pi 1.354166^2 h  
h=.173583…  
h\*12=2.08299

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**Author:** ![The\_Russian](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/the_russian/32/7414_2.png) [@The\_Russian](https://forums.speedlife.net/u/The_Russian)\
**Post date:** [January 16, 2008, 2:13pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/7 "2008-01-16T14:13:40Z")

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LoL at joo guys

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**Author:** ![LAFENGAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lafengas/32/7573_2.png) [@LAFENGAS](https://forums.speedlife.net/u/LAFENGAS)\
**Post date:** [January 16, 2008, 2:14pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/8 "2008-01-16T14:14:04Z")

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**FYI,**

a 5 gallon bucket will not hold 1 cubic foot of liquid.

7.48 gallons = 1cu-ft

please re-state your question when you have time to think.

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**Author:** ![suzukiriderman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/suzukiriderman/32/7421_2.png) [@suzukiriderman](https://forums.speedlife.net/u/suzukiriderman)\
**Post date:** [January 16, 2008, 2:22pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/9 "2008-01-16T14:22:46Z")

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> [@LAFENGAS](#):
>
> you need the I.D. of the bucket at the bottom, I.D. of the bucket at the Top, and the distance between those 2 I.D. measurments in order to have enough info.
> 
> “slightly wider” is a rough opinion
> 
> plus @ 32.5" diameter… is a pretty short 5 gallon bucket.
> 
> 32.5" Circumference?

I’m sorry, I meant circumference. I only need an approximate measurement so we can go with 32.5 circumference.  
My Problem is I have tons and tons of blast media that I need to dispose of and I need to try to figure out about how much it weighs. I figured a bucket would be easy to just fill and weigh then subtract the amount for the bucket. Since the dumpsters go by sq. ft. anyway this would be the easiest way to tell how high I could fill it.

> [@LAFENGAS](#):
>
> FYI,
> 
> a 5 gallon bucket will not hold 1 cubic foot of liquid.
> 
> 7.48 gallons = 1cu-ft
> 
> please re-state your question when you have time to think.

Sorry, I forgot I have to cover all my bases before I ask any questions. I’ll rethink question and post later.

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [January 16, 2008, 2:25pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/10 "2008-01-16T14:25:36Z")

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if you fill the bucket about 10.375 inches (10 3/8) it will be ROUGHLY .5 cubic feet.

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [January 16, 2008, 2:30pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/11 "2008-01-16T14:30:22Z")

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now reply to my PM damnit! 😃

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<div class="post-metadata">

**Author:** ![suzukiriderman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/suzukiriderman/32/7421_2.png) [@suzukiriderman](https://forums.speedlife.net/u/suzukiriderman)\
**Post date:** [January 16, 2008, 2:32pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/12 "2008-01-16T14:32:28Z")

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> [@newman](#):
>
> if you fill the bucket about 10.375 inches (10 3/8) it will be ROUGHLY .5 cubic feet.

That’s all I needed thanks!

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**Author:** ![turbofreak](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbofreak/32/5197_2.png) [@turbofreak](https://forums.speedlife.net/u/turbofreak)\
**Post date:** [January 16, 2008, 3:44pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/13 "2008-01-16T15:44:02Z")

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> [@suzukiriderman"](#):
>
> This a simple problem for someone that actually remembers how to figure it out. I have a 5 gallon bucket and I need to figure out how high to fill it for it to be a square foot. It’s diameter is 32.5" at the bottom and gets only slightly wider going up.(I’m not worried about being that accurate)

u in high school???

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<div class="post-metadata">

**Author:** ![suzukiriderman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/suzukiriderman/32/7421_2.png) [@suzukiriderman](https://forums.speedlife.net/u/suzukiriderman)\
**Post date:** [January 16, 2008, 5:13pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/14 "2008-01-16T17:13:08Z")

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> [@turbofreak](#):
>
> u in high school???

not yet :meh2:

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<div class="post-metadata">

**Author:** ![speedped79](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/speedped79/32/7491_2.png) [@speedped79](https://forums.speedlife.net/u/speedped79)\
**Post date:** [January 16, 2008, 5:31pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/15 "2008-01-16T17:31:30Z")

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nm

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**Author:** ![ubengineering](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ubengineering/32/5171_2.png) [@ubengineering](https://forums.speedlife.net/u/ubengineering)\
**Post date:** [January 16, 2008, 5:51pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/16 "2008-01-16T17:51:05Z")

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i finished all 3 levels of calculus, i dont wanna even think about this shit even tho i still have like 6 more math courses to take

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**Author:** ![squid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/squid/32/4984_2.png) [@squid](https://forums.speedlife.net/u/squid)\
**Post date:** [January 16, 2008, 7:45pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/17 "2008-01-16T19:45:59Z")

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The bigger problem ‘might’ be if they decide to consider the blast media as hazardous waste or not. Won’t matter how much you can fit in if they won’t accept it.

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<div class="post-metadata">

**Author:** ![suzukiriderman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/suzukiriderman/32/7421_2.png) [@suzukiriderman](https://forums.speedlife.net/u/suzukiriderman)\
**Post date:** [January 16, 2008, 7:47pm UTC](https://forums.speedlife.net/t/need-help-figuring-something-out-math/41938/18 "2008-01-16T19:47:42Z")

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> [@squid](#):
>
> The bigger problem ‘might’ be if they decide to consider the blast media as hazardous waste or not. Won’t matter how much you can fit in if they won’t accept it.

That’s all set, we have it tested.
