Problema Solution
A container tank is in the form of a the frustum of a right circular cone. the areas of the bases are 38.48 square feet and 107.51 square feet respectively. When full of liquid it contains 950.66 cubic feet. How high is the tank?
Answer provided by our tutors
Introduction & Disclaimer
The following material is provided as a service to our customers, for the purpose of sharing our knowledge of ponds and water gardens with other enthusiasts.
We recommend that you treat this material as a guideline and general information only and obtain paid professional advice to look at your individual circumstances and evaluate whether the material presented on this website is accurate and applicable to your situation.
All figures, guidelines, advice, performance specifications, etc. on this website are based on US gallons.
If you can't find the information you need, please send us an inquiry.
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What Size Pond Liner Do I Need ?
Measure from a Plan
Length of liner required = Max. length of pond + (2 x max. depth of pond) + min. 2 feet (min. 60 cm) overlap
Width of liner required = Max. width of pond + (2 x max. depth of pond) + min. 2 feet (min. 60 cm) overlap
Measure off a Completed Excavation
If you are measuring off a completed excavation, use a flexible measuring tape or a rope that completely conforms to the contours of the excavation.
To determine the full length of liner required, run the tape or rope down into the pond, exactly following the contours of the excavation, across all the ledges, to the bottom of the pond, and back out the other side.
Then add at least 2 feet or 60 cm (minimum 1 foot or 30 cm per side) to allow for sufficient liner overlap outside of the pond.
Use the same method to determine the width of the liner.
Be sure to measure across the maximum length and width and at right angles to each other.
Example
Using one of the above formulas and including a minimum liner overlap of 2 feet (60 cm) for both length and width, you determine a required liner size of 23' x 27'.
Now all you have to do is go to our pond liners page and look for a suitable size. In this case, the only suitable liner size is 25' x 30'.
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Important Formulas for Determining the Requirements of your Pond
Actual Pond Volume
Actual Pond Volume (US gallons)
= average length (ft) x average width (ft) x average depth (ft) x 7.48
Example
Pond is 12' avg. length x 10' avg. width x 2' avg. depth
Pond Volume: 12 x 10 x 2 x 7.48 = 1,795 US gallons