A diameter being a line has no width and so there are 0 sq ft in a 36 ft diameter.
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4*9 = 36 square feet.4*9 = 36 square feet.4*9 = 36 square feet.4*9 = 36 square feet.
Square footage (surface area) of a 36 inch diameter sphere = 4pir2 pi = 3.1416 r = 1/2 X diameter You asked for square footage; so first convert 36 inches to feet 36 inches / 12 inches/foot = 3 feet r = 1/2 X 3 feet = 1.5 feet surface area = 4 X 3.1416 X (1.5 feet)2 = 28 square feet
The circumference is 21.269 feet.
24 inches * 36 feet = 2 feet * 36 feet = 72 square feet.24 inches * 36 feet = 2 feet * 36 feet = 72 square feet.24 inches * 36 feet = 2 feet * 36 feet = 72 square feet.24 inches * 36 feet = 2 feet * 36 feet = 72 square feet.
36 ft * 40 ft = 1440 sq feet.