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the radius is half of the diameter. and the middle of the circle is half way between this diameter.

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Q: How do you find the center of a circle if you know the radius?
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Related questions

How do you find the radius of the circle when you know the center and a point on the circle?

measure it


How do you find the centre of a circle given part of a radius?

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.


If you know the length of a radius of a circle how can you find the length of the diameter?

The diameter of a circle is 2 times the radius. The radius of a circle is the distance from any point on the circle to the center of the circle, and the diameter is the distance from one side of the circle to the opposite side, passing through the center.


How do you find the radius of a circle if you know the radius?

You already know the radius.


How do you find diameter of circle?

To find the diameter you need to know what the radius of the circle which is from the center to the circumference ,the edge, then you times it by two and that's how yo find the diameter


How do you find the radius of the base in a cylinder?

It depends on the values you have. The base of a cylinder is a circle. If you know the circle's diameter, half it to find the radius. If you know the circle's circumference, divide by 2pi to find the radius. If you know the circle's area, divide by pi and take the square root to find the radius.


What is the radius for a circle?

To know what a radius is you have to kno what a diameter is. The diameter is the distance accross a circle through its center. The radius is half the diameter.


How do you find the center and radius of a circle?

just use the area formula ex... area of circle= pi(r square) if you know what your area is then plug it in then do PI / by area that will be your diameter to get the radius / your answer by 2


What is the radius of circle c?

Conceptually, the radius is the distance from the center of the circle to any point on its edge. If you know the circumference of the circle, then the radius is the circumference divided by 2 times pi.


How do you find the diameter of a circle when you know the radius?

Diameter = 2*Radius


How do you find the radius of a circle if you know the circumfrence?

radius = circumference/(2*pi)


How do you find the radius of a circle if you know the circumferance?

radius = circumference/2*pi