The radius is 1/2 the diameter. So, since the diameter is 8 the radius of the circle would be 4.
Divide the perimiter, or circumference, by pi (3.1415), which is the diamter, then divide that by 2 to get the radius
you cant: pi is the same for any circle - 3.1415... the diamter or the radius has to be given diameter divided by two equals the radius the radius times two equals the diameter
Radius = Diameter/2 so if diameter = 20 Radius = 20/2 = 10
The circumference of a circle if its radius is 3 is about 18.85
The circle's radius is 1.5/2 = 0.75 ft = 9 inches The area of the circle is (pi) times (radius)2 = (pi) x (9)2 = 254.469 square inches (rounded)
d = 2r
A circle has only one measure for its radius. A shape that has a "radius" of 3 in by 4 in cannot be a circle.
it is the circumfrance of a circle divided by pi.
I'm not sure exactly what you are asking here, but some properties of a circle with a radius of 2 ft are: Circumference = 12.56ft (2*Pi*radius) Area = 12.56 square feet (Pi*(radius squared)) Diamter = 4 ft (2*radius) Hope that helps :o)
Circumference of circle: 14*pi = 43.982 feet rounded to 3 decimal places