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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.)
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Continue Learning about Geometry
What is the radius of a circle with the area of 36?
The radius of a circle with the area of 36 is 3.385
What is the area of a circle if the radius is 9m?
The area of a circle if the radius is 9m 254.5m2
What is the area of a circle with radius of 2m?
The area of a circle with a radius of 2m is: 12.566 m2
What is the area of a circle of the radius of 10m?
A circle with a radius of 10m has an area of 314.16 m2
How you get the area of a circle?
A= Area of the circle¶= Pi (About 3.14)r= Radius squared (Radius times radius)3.14 * Radius squared
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