Answer: Radius = [tex]\sqrt{\frac{Area}{\pi } }[/tex]
Diameter = 2 x radius
Step-by-step explanation:
Given data,
parts of each circle,
Radius of a circle from area:
If you know the area = A
The radius is,
r = √(A / π) .
Radius of a circle from circumference:
If you know the circumference = c
The radius is,
r = c / (2 * π) .
Radius of a circle from diameter:
If you know the diameter = d ,
The radius is,
r = d / 2
Define Radius :
In classical geometry, a radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length. The name comes from the Latin radius, meaning ray but also the spoke of a chariot wheel.
[tex]r = \frac{c}{2\pi }[/tex]
Where,
r = radius
c = circumference
[tex]\pi[/tex] = pi
Define Diameter :
The diameter of a circle is the distance from a point on the circle to a point. radians away, and is the maximum distance from one point on a circle to another. The diameter of a sphere is the maximum distance between two antipodal points on the surface of the sphere. If is the radius of a circle or sphere, then .
diameter = 2 x radius
Radius and diameter see the image a and b.
Therefore,
Radius = Diameter/2
Radius = circumference /2[tex]\pi[/tex]
Radius = [tex]\sqrt{\frac{Area}{\pi } }[/tex]
Diameter = 2 x radius
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