Quandaries and Queries
  

 

I am building a pond and need to convert the cubic dimensions into gallons in order to know what size fountain pump to purchase.

My pond is 1 foot deep x eight feet long x three feet wide.

How many gallons will it hold?

Scott
 

 

Hi Scott,

My dictionary says that there are 231 cubic inches in a gallon so the first calculation to make is to convert all the dimensions to inches. Since there are 12 inches in a foot, your pond is

12 inches by 96 inches by 36 inches.

Thus the volume is

12 96 36 = 41472 cubic inches.

Since there are 231 cubic inches in a gallon this is

 41472 /231 = 179.5 gallons

Penny