It works out as about 4.02 inches
Approx 12.8 inches.
diameter = 128/pi
The circumference of a 128-foot diameter circle is: 402.12 feet.
If the circle's circunference is 128 then radius is 128/2pi = about 20.372 inches
If the circumference is 128 feet, the radius is 20.37 feet. If the diameter is 128 feet, the radius is 64 feet.
Assuming the dimensions of the square pan is 8 by 8 by 2, the volume is: 8 x 8 x 2 = 128 cubic inches Volume of circle pan is: pi × r2 × h where pi is 3.14, r is half the diameter or 4 inches and h = 2 3.14 x 4 x 4 x 2 = 100.48 cubic inches
It is: 128/4 = 32 which is a side of the square and so 32*pi is the circumference of the circle
128=2πr 128/2π=r r=20.37 Diameter is equal to twice radius Therefore 20.37 times 2 40.74
128 divided by pi (approx. 3.1415927) = about 40.743 feet.
It is a simple Algebra question. The answer is 401.92.
Remember the circle equation. C = pi d Algebraically rearranging d = C/pi d = 128ft /3.141592.... d = 40.74366... feet. ~ 40.75 feet = 40ft 9 inches.
144 square inches = 1 square foot 128" x 128" = 16,384 square inches = 1137/9 square feet. You need to buy at least 114 square feet.