18 inches
All depends what you mean by 18 inches, is that the circumference, the diameter or the radius
A circle with a radius of 18 inches has an area of 1,017.88 square inches.
84.16 US gallons
It looks like an extra large pizza which has a diameter of 18 inches
18 inches
All depends what you mean by 18 inches, is that the circumference, the diameter or the radius
The area of a 18-inch diameter circle is: 254.5 square inches.
The circumference of a circle with an 18-inch diameter is about 56.55 inches. (C = d x Pi)
Circumference of circle: 18*pi = 56.549 inches rounded up to 3 decimal places
Area of circle with 18 inch diameter = pi*(18/2)2 = 81*pi sq inches Area of circle with 9.6 inch diameter = pi*(9.6/2)2 = 23.04*pi sq inches Difference = (81 - 23.04)*pi = 182.09 sq inches.
Area = pi*9*9 square inches
Area of 30 inch circle = pi*302 sq inches Area of 18 inch circle = pi*182 sq inches Difference = pi*(302 - 182) = 576*pi sq inches 1 sq foot = 1 ft*1 ft = 12 inches*12 inches = 144 sq inches so 576*pi sq inches = 576/144 *pi sq ft = 4*pi sq ft = 12.57 sq ft.
A circle with a diameter of 18 feet has a perimeter of 56.5 feet.
A circle with a radius of 18 inches has an area of 1,017.88 square inches.
84.16 US gallons
It looks like an extra large pizza which has a diameter of 18 inches