Im trying to find the volume of a flower box I've built, so I can figure out how much dirt I need. The thing is 35" long, 24" wide at the top, 4" wide at the bottom, and 14" tall.

Question

anonymous · Answer

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anonymous · Answer

is it just length x height x (width1 + width2)/2 ?

anonymous · Answer

which would be 6860 inches cubed, so, 571cubic feet? that seems like a lot...

jdoe0001 · Answer

http://www.mathatube.com/images/finding_trapezoid-045.jpg

jdoe0001 · Answer

get the area of the trapezoid on either end, and multiply it by the length

irishboy123 · Answer

yes - 6860 inches cubed.

i am from a metric background but surely the conversion to cubic feet means you divide by 12x12x12 giving 3.96 cub feet?

anonymous · Answer

ya your right. I messed up the easiest part apparently haha. But the volume was right as far as my method?

anonymous · Answer

It is 3.96, assuming the 6860 is right.

irishboy123 · Answer

yep, i think your volume is bang on and the final number now makes sense when you think the think is just about 3 ft long etc etc

irishboy123 · Answer

@xartaan it *is* right.  3.96 is the answer.  and it makes practical sense.