Radius of a circle= Perimeter of the circle/2*pi Radius is half the diameter Radius is the length of a straight line from the center point of the circle to the edge of the circle.
If it is a 7.1 cm radius circle, then its radius is exactly 7.1 cm!
If the circumference of a circle is 132cm its radius is: 21.01 cm
The diameter of a circle is twice the radius. A circle with a radius of 9 would have a diameter of 18. (9*2=18).
the circumfrence of a circle is pi times it's radius squared.
If a circle has radius r, then the area of the circle is pi r2, pi being about 3.14159. I beleive the function you are looking for is A(c)=c/2*r
You can certainly express the radius as a function of its area, yes. If the area is known, you can solve the formula for the area of the circle to uniquely get the radius. (The quadratic equation has two solutions; you will of course choose the positive solution for the radius.)
170mm. Diameter of a circle is two time the radius.
Circumference = 2 x pi x radius Therefore, radius = circumference / ( 2 x pi )
The radius of the circle.
C = 2 x R x pi
A = (pi)r2 A/pi = r2 √(A/pi) = r
The radius of a circle is half the circle's diameter
the radius of a circle is r
Radius of a circle= Perimeter of the circle/2*pi Radius is half the diameter Radius is the length of a straight line from the center point of the circle to the edge of the circle.
The radius of a circle is half the diameter so if the radius of a circle is r, then the diameter is 2r.
Yes.You could also state that the circumference is directly proportional to the radius. The proportionality constant is (2 pi).