determining box volume of an angled box

[Jdizzle 10+ year member]

i still have no idea how to do this at all so say

my box is 53in long, 18inch tall, 4in top depth, 12in bottom depth what would that equal out to? and care to explain it?

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[djman37 5,000+ posts]

you could

1. google trapezoid volume formula

2. try the12volt for their calc.

3. break the trapezoid into rectangle and triangle volumes to get trap volume.

 

[Anniku989 10+ year member]

Length x average depth x height

53L x 8D x 18H = 7632in^2

Take half of the sum of the top and bottom depth to find the average depth

 

[mlstrass 5,000+ posts]

Use the calc here:

http://www.the12volt.com/caraudio/boxcalcs.asp#wed2

 

[Jdizzle 10+ year member]

i already did i could only find area forumlas not any volume

 

[miker 5,000+ posts]

53, 8, 18... 8x18= 144... 144x52= 7632/ 2 (b/c it's a tri.) = 3816 in cubed.

Then you do 4x18x53= 3816+3816 + 7632... then divide that by 1728 (1 cubic foot) and you get

4.42 cubes

 

[Jdizzle 10+ year member]

wow nice thanks alot guys

 

[mlstrass 5,000+ posts]

Wedge2 volume calculator...........

 

[shortyg83 10+ year member]

53, 8, 18... 8x18= 144... 144x52= 7632/ 2 (b/c it's a tri.) = 3816 in cubed.
Then you do 4x18x53= 3816+3816 + 7632... then divide that by 1728 (1 cubic foot) and you get

4.42 cubes

Yea i dont think that is right at all.

Im pretty sure his box would be 3.2cubes

 

[ultimate157 5,000+ posts]

53, 8, 18... 8x18= 144... 144x52= 7632/ 2 (b/c it's a tri.) = 3816 in cubed.
Then you do 4x18x53= 3816+3816 + 7632... then divide that by 1728 (1 cubic foot) and you get

4.42 cubes

You have to take into account wood thickness.

Yea i dont think that is right at all.
Im pretty sure his box would be 3.2cubes

yes, 3.2 cubes after subtractiong wood volume.

 

[miker 5,000+ posts]

Umm no... It is right... Yeah lol /\/\/\/\ I just rounded..

 

[ultimate157 5,000+ posts]

Umm no... It is right... Yeah lol /\/\/\/\ I just rounded..

Read my edit. You forgot box to subtract wood thickness.

 

[miker 5,000+ posts]

Read my edit. You forgot box to subtract wood thickness.

Ahh.. Dang your right...

 

[miker 5,000+ posts]

**** a whole cube?

 

[Immacomputer 10+ year member]

i already did i could only find area forumlas not any volume

Area times distance equals volume.