If the diameter of a circle is 18 inches then its radius is 18/2 = 9 inches
Radius squared is half of the diameter multiplied by itself. Example: diameter is 6 inches, radius is 3 inches (half of diameter), radius squared is 9 inches (radius multiplied by itself 3 x 3 = 9).
Radius = Diameter/2. So in this case 4.5 inches.
It is the name given to the straight line from the centre of a circle to its circumference when that distance is 36 inches.
Since your circle has a diameter of 9 feet (the definition of a "9 by 9" circle), the radius is half of that distance. In this case, your radius is 4.5 feet or 54 inches.
A circle with a radius of 9 inches has a circumference of 56.55 inches.
A circle with a radius of 9 inches has a circumference of 56.55 inches and a diameter of 18 inches.
If the diameter of a circle is 18 inches then its radius is 18/2 = 9 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
Radius squared is half of the diameter multiplied by itself. Example: diameter is 6 inches, radius is 3 inches (half of diameter), radius squared is 9 inches (radius multiplied by itself 3 x 3 = 9).
The diameter is twice the radius in inches: 18*36 = 648 inches
18 inches
18 pi inches
Radius = Diameter/2. So in this case 4.5 inches.
R=D/2. If the diameter of a circle is 18 inches, the radius is 9 inches. Radius = 1/2 diameter or 9"
C = ~56.55 inches.
254.47 square inches.