48
First of all, you must have meant cubic feet (volume) not square feet.
The area of a 2 ft. diameter pipe is 2*2*Pi/4 = Pi = 3.1416 sq.ft.
The volume = area*length = 3.1416*12 = 37.6991cu.ft.
"Diameter" implies a round pipe.
153.93804 square feet.
A circle with a 27-foot diameter has an area of 572.56 square feet.
379.94 square feet
A circle with a diameter of 18 feet has an area of 254.5 square feet.
A circle with a diameter of 24 feet has an area of 452 square feet.
The square foot area of a 41-foot diameter circle is: 1,320 square feet.
A 45-foot diameter circle has an area of 1,590.4 square feet.
153.93804 square feet.
3.14159265 square feet.
The area is 3318.3 square feet, approx.
A circle with a 27-foot diameter has an area of 572.56 square feet.
8011.846665 or 8012 square feet to the nearest square foot
803.84 feet
The area of a circle with a 7-foot diameter is: 38.48 square feet.
132.7 square feet.
379.94 square feet
Approx 755 square feet.