63.585 inches
The area of a circle with a diameter of 9 inches is: 63.62 square inches.
Area = 63.6 square inches.
The radius is 9 inches because area of circle is pi*9 squared = 81pi square inches and the diameter is twice the radius which is 2*9 = 18 inches
Exact area of the circle: 9*pi inches
Area = pi*9*9 square inches
Exact area of the circle: 9*pi inches
The formula for area of a circle is: A = (pi)*r^2 If the diameter of a circle is 6 then the circle's radius is 3. So, A = (pi)*(3)^2 A= 9*(pi) inches squared or A = 28.26 inches squared (rounded)
Using 3.14 as Pi the area of circle is: 28.259999999999998
The circumference of 9 inch diameter circle is about 28.27 inches.
18 inches
A circle with a diameter of 9 yards has an area of 63.62 square yards.
A circle with a radius of 9 inches has a circumference of 56.55 inches and a diameter of 18 inches.