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Earn +20 ptsQ: What is the formula for a circle radius r?
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Continue Learning about Geometry
What is the formula for finding an area of a circle?
The area of a circle with a known radius can calculated using the following formula where r is the radius : A = Pi(r)2
What is the mathematical formula for the area of a circle?
If a circle has the area A and radius r, thenA = pi * r^2
How do you find the radius of a circle when the area is given?
-- Take the formula for the area of the circle in terms of the radius . . . A = (pi) R2-- Solve that formula for 'R'. You'll then have a formula for the radius in terms of the area,which is exactly what you're looking for.
What is the area of a circle with a radius?
The formula is: Area = Pi(r)2
What is the formula for a circle?
Formula of a circle in a Cartesian plane: (x-h)^2+ (y-k)^2 = r^2 where the center is at (h,k) and the radius is r.
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