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Calculating Volume


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  • Regular Member

You can estimate the volume with that formula; just try to get the radius from the middle of the barrel, as opposed to the top or the bottom, and measure it on the inside, not the outside.

If you measurements are all in inches, you can divide the number you get by 231 to get the number of gallons.

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  • Regular Member

I figured it out for those who are interested in their barrels... The shape of a barrel is called a conical frustrum. (The things we learn for our fish! ). The formula for a conical frustrum is 1/3 pi *height (r1 squared+r2 squared+r1*r2). This will give you volume in cubic inches or cubic centimeters (whatever you measured with).

The volume of my barrell converted into gallons was 24.5 gallons. I was sad that it was so small. :(

Thanks for your help kortinee! I was hoping a young mind would come along! :D

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  • Regular Member

Thanks but I didn't have that conversion for cubic inches to gallons. I used a conversion program online. I liked being able to go back and check my work. You helped a lot! :D

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