For a radius of 5 centimeters the area are 78.53981633974483 square centimeters.
Area = Pi(r)2 - A circle with a radius of 12 centimeters has an area of 452.39 square centimeters.
The area of a circle whose radius is 19 centimeters is: 1,134 cm2
Radius: square root of (1256/pi) = 20 cm rounded to nearest integer
Diameter is twice the radius, so 15 cm.
The radius is 9 feet.
A circle with a radius of 7.75 meters has an area of 188.69 square meters.
A circle with a radius of 6.6 inches has an area of 136.85 square inches.
Area of a circle = (pi) x (radius)2Radius = 1/2 of the diameterArea of this particular circle = (pi) x (7)2 = 49 pi = 153.938 square centimeters (rounded)
A circle with a radius of 21 cm has an area of ~1,385.44 square cm
A circle with a radius of 6 units has an area of 113.1 square units.