If you have a pyramid shape, you calculate the volume by the formula: volume = (1/3)Bh (where "B" is the base area - in the case of a lake, that would presumably be the surface area), and "h" is the perpendicular height (in this case, the depth of the lake).This will give you the volume in units which are the cube of the units of length used - for example, if you used feet for the depth and square feet for the surface area, the volume will be in cubic feet. You will then need to convert that to gallons.
3
Approx 756,993,907,779 gallons
There are approximately 696 billion gallons of water in Lake Winnebago.
Lake Pleasant, Arizona has 653062 acre-feet which is 212,801,184.619.474 gallons.
85
90 millon gallons
Truman Lake in Missouri has about 11.32 million gallons of water in it. There are several types of fish in the lake as well.
The answer will depend on how deep the lake is!
20000
it has five vertices i believe
5 faces
4535354634 feet