Area = pi * radius squared
A = pir2
radius = diameter/2
radius = 18/2 = 9
Area = pi(9)2
= 254 units
=========
The area of a 18-inch diameter circle is: 254.5 square inches.
A circle with a diameter of 18 centimeters has an area of 254.47 square centimeters.
The area of a circle, if the diameter is 18 yards, is: 254.5 square yards.
The area of a circle whose diameter is 18 inches is: 254.5 square inches.
18
Area of circle: 81*pi square feet
A circle with a diameter of 18 meters has an area of 254 square meters.
Using 3.14 as Pi the area of circle is: 254.34
Using 3.14 as Pi the area of circle is: 254.34
Area = 254 square feet.
Using 3.14 as Pi the area of circle is: 254.34
Using 3.14 as Pi the area of circle is: 254.34