Let's say that each column is a cylinder with a height, h, of 10 ft and a base with diameter, d, of 18 in or 1.5 ft (since 1ft = 12 in) or with a radius, r, of 0.75 ft.
We need to find the surface area S.A. of the cylinder (or the column), which is given by the formula
S.A. = dpih + 2pir2
S.A. = (1.5 ft)(pi)(10 ft) + 2(pi)(0.75 ft)2 = 10pi ft2 + 1.125pi ft2 = 11.125pi ft2 ≈ 35 ft2
The area of a circle with a diameter of 12 inches is: 113.1 square inches.
The diameter is 5.97 inches.
A circle whose diameter is 2 inches has an area of 'pi' square inches.3.142 in2 (rounded)
The area of a circle that has a diameter of 14 inches is: 153.9 square inches.
The area of a circle with a diameter of 16 inches is: 201.1 square inches.
If the area of a circle is 20 square inches the diameter is: 5.046 inches.
The area of a circle with a diameter of 12 inches is: 113.1 square inches.
The diameter is 5.97 inches.
If the area of a circle is about 28 square inches the diameter is: about six inches (5.971).
The area of a circle with the diameter of 28 inches is: 615.8 square inches OR 4.28 square feet.
A 4.75-inch diameter circle contains 17.72 square inches.
The area of a circle with diameter of 16 inches is: 201.1 square inches.
The area of a circle with a diameter of 4 inches is: 12.57 square inches.
The area of a circle with a diameter of 16 inches is: 201.1 square inches.
The area of a circle when the diameter is 30 inches is: 706.9 square inches.
The area of a circle with a diameter of 9 inches is: 63.62 square inches.
The area of the circle if the diameter is 16 inches is: 201.1 square inches.