If my pool is 21ft by 4 feet high, how many gallons of water are in it?

Question

I need to add murridic acid to my pool.
If my pool is 21ft by 4 feet high, how many gallons of water are in it?

21 ft by 4ft high cicrle

Answer 1

you need to tell us the width as well

Answer 2

Our 18' X 4' holds pool has 7,000 gallons of water.

Answer 3

For a round pool 21' wide and 4' deep

10407.6 gallons
visit this site to get the answer yourself.
http://www.focuspools.com/poolcare/volume.asp

Answer 4

4 * p i* r^2 = pi * 10.5 * 10.5 *4 = 1385.44236023309881 cubic feet

1385.44236023309881 cubic feet = 10,363.8285 US gallons

Also remember your pool may be 4ft deep but you usually dont fill it all the way to the top.

Answer 5

pi r squared or pi10.5 squared times 4 gives you volume in cubic feet,,,,then you need to find a cubic foot to gallon multiplier,,,you have all the dimensions you need,,,monkeys are smarter than the humans who have answered so far

Answer 6

My memory tells me there are 8 gallons of water is one cubic foot. Can you do the math or do you want me to?

Answer 7

The last I checked we were living in 3 dimensions. We need the 3rd.

Answer 8

1 gal water = 231 cubic inches=8.333 pounds 13,500 gals

Answer 9

Try this link below, has other things also.
http://www.havuz.org/pool-calculators.htm
Hope it helps.

Answer 10

mine is 24 x 4 and is 15,000......urs is about 13,000.......u dont have to get the gallons to murridic acid ratio perfect.....