I Really Need Help! With My Geometry Fish Tank Related

[wwestar2000]

So i have a "Why is geometry is useful in everyday life" project and I came up with the geometric formula used to calculate the volume of water a fishtank holds. And i remembered all the math wiz's on here who could help me. I tryed google with every variation of the terms but never explaining the formula of how it's used. Can anyone plz help me. )

 

[bogwood]

Does this help you at all?

http/www.fishforever.co.uk/convert.html

 

[wwestar2000]

um. i need more of like a Lenghth x width x angle or something like that. Idk what i just wrote if its true i just like hypothesised it would be something like that. Also if someone can like explain it it would be great.

 

[Ami]

um. i need more of like a Lenghth x width x angle or something like that. Idk what i just wrote if its true i just like hypothesised it would be something like that. Also if someone can like explain it it would be great.

Angles? What's that got to do with it?

Length x width x height in cm / 1000 =volume in litres

Not sure how to do it in inches, I just divide my litres by 4.5 to get the UK gallons and 3.7 (maybe 3.9 I've forgotten) for US gallons.

Not sure what this has to do with geometry though....

 

[OohFeeshy]

For gallons, lcwxh / 231 is volume in US gallons, I think .Or UK...

 

[tidytourniquet]

LxWxH in inches /231 gets you US gallons

 

[Bignose]

Angles would have a lot to do with it if the tank where non-rectangular. Especially since I have seen some tanks that are regular hexagons (all 6 sides same size) and some that are not regular hexagons (2 of the sides a lot larger than the other 4). Bowfront tanks would require somewhat higher math than geometry to estimate, but if you approximate the curve in the bowfront by a line or multiple lines, the angles those lines would be important in determining the volume as well.

 

[fishing4exotics]

Hi wwestar2000, it sounds like you want a formula to work out the gallons for a given dimension. Other members have already given the formula that is commonly used. Length" X width" X height" then taking the product and dividing by 231. That will give you US gallons. So for a tank that is 48" in length X 13" wide X 24" tall you get 14976. Then you take 14976 and divide that by 231 and you get 64.8.

That gives you the approximate gallons. You have to take in consideration the thickness of the glass/acrylic. It would be more accurate if the dimensions were of the inside of the tank.

 

[fulltilt]

This is the best site I've found to do that :

http/www.cidadevirtual.pt/mrf/fixe/index.html

It gives fish numbers as well, but be sure to use 0 in the % area if you don't want that size.