# Volume of a obelisk Calculator

## Calculates the volume of a obelisk given the base and top sides, and height. | |||

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- Purpose of use
- Hopper car volume calculation
- Comment/Request
- I found different formula that give different result.

V=h/3 (AB+ab+sqrt(AB x ab)

- Purpose of use
- Calculating wood chip pile

- Purpose of use
- Volume of a hopper for a conveyor

- Purpose of use
- Calculating the volume of a sloped fish pond

- Purpose of use
- Just hobby
- Comment/Request
- I the formula proved / derived.

I use the formula:

V = h/4 x ( A-a) x (B-b)+ h/12 x (A-a) x (B-b)

These formula give the same result, and is easy to understand.

- Purpose of use
- Determine the volume of a sand house needed to contain 2,000 tons of cinders.
- Comment/Request
- It would be handy if one could input the angle of repose to determine a and b given h, A, B and the angle of repose. Very helpful website. Thanks

- Purpose of use
- Tank volume for custom fabrication of irregular shaped fuel tanks.

- Purpose of use
- calculating the volume of a rock pit

- Purpose of use
- Calculating the volume of over-stack above a wall

- Purpose of use
- calculating the volume of a conveyor belt feed hopper
- Comment/Request
- very usefull

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