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9 feet.

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Q: What is the radius of a circle 18feet across?
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Related questions

what is the radius of CIRCLE THAT IS INCHES ACROSS?

If a circle has a diameter of 10 inches across it then its radius is half of 10 inches which is 5 inches.


How do you find out the radius of a circle?

The radius of a circle is half its diameter (the measure of the circle from one side across to the other).


Is a circle less than or equal to the radius?

The radius of a circle is the distance from the center of the circle, out to the edge of the circle. The distance all the way across the circle is the "diameter." Half of the diameter is the radius.


Whats the diameter of a circle?

Typical answer from The WikiAnswers Community: IT IS WRONG!The diameter is the distance across the circle, through its centre. It is double the radius, not the other way round!


What is the radius of the circle that's 10 inches across?

If a circle has a diameter of 10 inches across it then its radius is half of 10 inches which is 5 inches.


Does a diameter go all the way across or halfway across a circle?

A diameter goes all the way across a circle through the center. A radius goes half way across, from the center to any point on the circle. So a circle's diameter is two times its radius.All the way through the centre of the circle but the radius only goes half way from the centre of the circle


What does the diameter of a circle measure?

The length across the circle. 2 x the radius.


What is an easy meaning for radius?

Halfway across a circle


How do you measure radius?

Half the distance across a circle.


Find the radius of a circle which has a diameter of 3.6cm?

The radius of a circle is the distance from the center to an outside edge of the circle. The diameter is the distance all the way across the circle. Therefore, the radius is half the value of the diameter.


What is the radius of a circle that is 24 feet across?

Oh, what a delightful question! To find the radius of a circle, we simply divide the diameter by 2. So, if the circle is 24 feet across, the radius would be 12 feet. Just imagine all the happy little circles you can create with that radius!


What is the space inside a circle?

Circumference is the outside of the circle and the inside is the are of the circle. And inside of the circle, there is diameter and radius. Radius is from the center point to the edge of the circle and diameter is all the way across.