You would have to know the length of the radius. The center of the circle is at one end of the radius. If you just know where some part of the radius is, and not that the part touches the circle then you cannot know where the center is without at lest a point on the circumference.
Diameter of a circle = 2*radius Circumference of a circle = 2*radius*pi
The radius of a circle is the distance from its centre to its circumference. If a circle has a radius of r units then the length of its circumference is 2*pi*r units.
You times the radius by 2.
The longest chord in a circle is its diameter and halve of this is its radius.
The diameter is the length of a line touching both sides of the circle and passing through the centre. The radius is the length of a line from the centre to touching the circle, and is half the length of the diameter, the diameter then is twice the length of the radius > diameter = radius * 2 = 32 * 2 = 64
If the circumference or diameter is given then you can find the radius or simply measure the distance from the centre of the circle to the circumference.
Measure the distance from the centre of the circle to its circumference.
Double the radius
The radius of a circle is any straight line from the centre of the circle to its circumference. The radius can also refer to the length of this line.
Diameter of a circle = 2*radius Circumference of a circle = 2*radius*pi
Radius is half the length from one side of a circle to the other or half the diameter.
The radius of a circle is the distance from its centre to its circumference. If a circle has a radius of r units then the length of its circumference is 2*pi*r units.
You times the radius by 2.
Find the distance of the point from the centre of the circle. If the distance is - less than that radius then the point is inside the circle, - equal to the radius then the point is on the circle, and - greater than that radius then the point is outside the circle.
The longest chord in a circle is its diameter and halve of this is its radius.
The answer depends on what information you are given.
Half the square root of the square radius equals the circle radius.