First we have to find the radius because the area of a circle is pi*radius2:
2*pi*radius = 26
Rearrange the formula:
radius = 26/2*pi
radius = 4.13802852 units
area = pi*4.138028522 = 53.79437075 square units
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169/pi = 53.79437...
25.78310078 or about 26 square units
If the pool is 26 feet around, then its circumference is 26 feet. If the pool is 26 feet across, then its circumference is 81.7 feet.
radius=13 area=40.82 circumfrence=8.28025477707
circumference doesn't matter when solving for area..