A question of volume involving Pi

[Chefken]

I restored the Koi pond in my yard years ago but never really figured out its total volume. I am a chef not a mathmatition! Ironic because the question involes pi.......I have a concrete 9.5 foot circle......3 feet deep.....I would love someone more comfortable with numbers to give me hand.....i filter for 1000 gallons but it is way understocked.....I am considering putting a cold weather monster cat in there!! Thanks!!

 

[KLee79]

swimming pool volume calculator

Try that or you can always time the water out of its source. Like time how long it takes to fill a 100 gallon tank or 10 gallon for that matter. Then multiply how long it takes to fill up the entire pond..

 

[Chefken]

I have never emptied it completely.....It gets fresh water from the sky which just did a 40% water change for me last week when we got 7 inches of rain.....with a circle the math should be easy for those who do math and know the formula which I do not!!!! Thanks though!

 

[kevinfleming21]

are you asking for the overall volume of the pond?

 

[KLee79]

Formula for volume of a cylinder, V =(Pi)(h)(r)(r)

Or volume = (pi)(height)(radius)(radius)

 

[kevinfleming21]

more or less around 850 gallon i think. It has been a while haha

 

[Chefken]

thanks....would you enter the dimensions in inches or feet? Is the answer in cubic feet or inches? How about gallons???? Thanks!

 

[KLee79]

i think its 212.64 gallons??

 

[Chefken]

Thanks....thought it might be more....I know it pretty much taps out my well to fill it up!!

 

[Chefken]

Gotta be more than that.....over nine feet across.....three feet deep.....you can swin in there!