Quandaries
and Queries
My question is:
I need to have dirt hauled away from my built in pool and the haulers are asking me how many yards of dirt there is. How would I figure that out? It is a 24 ft round pool and 3 inches of soil depth was dug out.
Thank you!
Debra
Hi Debra,
By a "24 ft round pool" I am assuming that you mean 24 feet in diameter.
When contractors say "yards" in the context they mean "cubic yards". You have a very short circular cylinder of soil to remove which has a radius of 12 ft and a height of 3 inches. The volume of a circular cylinder is given by
volume =
r2 h
where r is the radius, h is the height and is approximately 3.1416. You want the volume in cubic yards so you should first change all the dimensions to yards.
12 feet is 12/3 = 4 yards
3 inches is 3/12 = 1/4 feet which is 1/4
1/3 = 1/12 yards.
Thus the volume of dirt is
Penny