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Presumably you mean the area of a circle? Area of a circle = pi*radius2 Area = pi*3.82 = 45.36459792 Area = 45 square meters to the nearest square meter.
First, determine how many cubic feet you have by multiplying HxWxD- in your case- 45 cubic feet. Each cubic foot will hold 7.48 gallons. Multiply the 45 cubic feet by 7.48 to get the answer.
1,125 ****************** 25+25+45+45= 140 ft.
They are: 36+9 = 45
The square root of 45 in simplest form is 3sqrt(5). You take the 2 roots from 45 (5 and 9) and find out the square root of 9 is 3, while the square root of 5 is still just square root 5.