Does anybody know how to figure.......?

You want to compute the volume of a cylinder:

V = π r² h

height h = 10ft

diameter d = 5ft

Find the radius r:

r = d/2 = 2.5ft

So we're ready to compute the volume:

V = π (2.5 ft)² ×10 ft

= 62.5 π ft³

= 196.349541 cubic feet (approx)

You want to convert to gallons:

196.349541 cubic feet = 1468.79656 gallons

http://www.google.com/search?q=196.349541%20cubic%...

So about 1470 gallons, if you want to round it off.

Note that the answerer below does not realize that a cubic foot is not the same as a gallon.

The well is a cylinder. The volume of a cylinder is found by finding the area of the base(circle) and multiplying it times the height.

Area of a circle is (pi)r^2 So, (3.14)(2.5)^2 times the height of 10. Your answer will be in cubic ft. Look up and see how many gallons are in 1 cubic ft. of water.

Hope this will help!

The well is a cylinder. The formula for the volume if a cylinder is pi x the radius squared x height. So the volume of the water in your well is 196.25 cubic feet. A cubic foot of water is equal to 7.48 gallons. If your measurements are correct, you have approx. 1500 gallons of water. (It actually came out to 1467.95)

volume = (pi)(r^2)(h)

volume = (3.14)(2.5^2)(10)

volume = (3.14)(6.25)(10)

volume = 196.25 gallons