This question cannot be answered sensibly. An acre is a measure of area, with dimensions [L2]. A foot is a measure of distance, with dimensions [L]. Basic dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
6/8 of an acre is 32,670 square feet.
6/9 of an acre is 29,040 square feet.
70' x 104' = 7,280 square feet or 0.167 acre.
3.379e+6 acre feet per cubic mile.
.6 acres = 26,136 square feet.
261,360 square feet in 6 acres.
One acre is equal to 43,560 square feet. Therefore, one sixth of an acre is equal to 43,560 / 6 = 7,260 square feet.
One acre is not necessarily a square lot it can be many shapes and lengths X widths all the way to 43,560 ft X 1 ft wide. The answer to your question can be 43,560 ft or even double that if the lot or land is 6 inches wide.
That isn't even close to a quarter of an acre. It is 6% of an acre. An acre contains 43,560 square feet. The conversion says that it would be 2,740 square feet.
If the pond is uniformly 6-feet deep it would contain about 1,955,109 gallons of water.
About 6/10ths of an acre.
Approximately 1,466,330 gallons of water.