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What is the formula for the radius of a circle when you have the area?
Wiki User
∙ 15y ago
Well, being that the area of a circle is A=pi(approx. 3.14)times r2 , you just have to reverse that, say, if the area was 6 than you would replace the A with the 6. So, now it looks like, 6=3.14 times r2, now you have to solve the equasion. You do agree if you divide pi from itself you come up with zero, right? So you can cross out pi and say its zero. Now all you have left on this side of the = sign is r2. But since you divided 3.14 from one side, you have to do it to the other. So you do 6 divided by 3.14 which is about 1.91. Right now, we have 1.91=r2, if you want to know the exact number of the radius, you divide 1.91 by 2. This is about 0.955. So now you have your answer! 0.955=r!
Wiki User
∙ 15y ago
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Formula and result of area of circle?
The formula for the area of a circle is: Area = (pi) x (Radius)2 . When you know the radius of the circle and you use it to calculate the area of the circle, the result will be equal to (pi) x (Radius)2 .
Why do you use the radius in the formula of finding the area of a circle?
Area of circle = pi*(radius)2
A circle has radius r what is the formula for the area of the circle?
For a circle or radius r, the area is given by: area = {pi}r2 (ie pi times the radius squared)
Investigate the formula of the area of a circle?
The formula to find the area of a circle is pi x the radius squared.
What is the formula for area and circumference of a circle?
The formula for the area of a circle is pi * radius squared. The circumference of a circle's formula is pi * diameter. NOTE: pi equals approx. 3.14
Formula and result of area of circle?
The formula for the area of a circle is: Area = (pi) x (Radius)2 . When you know the radius of the circle and you use it to calculate the area of the circle, the result will be equal to (pi) x (Radius)2 .
What is formula for the area of a circle?
the formula for the area of a circle is 3.14 x radius squared
Why do you use the radius in the formula of finding the area of a circle?
Area of circle = pi*(radius)2
What is the radius and the area of a circle?
The radius of a circle is the distance from the center to any point on the circle. The area is the space within the circle. The formula to find the area is πr2. r stands for the radius of the circle. If you want to find the radius, you can work backwards from the area or the circumference, which is the perimeter of the circle. The formula for circumference is 2πr.
Formula of circle?
The formula for the area of a circle is pi times the radius squared. The formula for the circumference of a circle is two times pi times the radius.
What is Pi R Squared?
The formula to get the area of a circle ("R" being the radius of the circle). Radius means the distance from the center of the circle to the edge.It means pi times radius squared which is the formula for finding the area of a circle.
A circle has radius r what is the formula for the area of the circle?
For a circle or radius r, the area is given by: area = {pi}r2 (ie pi times the radius squared)
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.
How do you do the area of a circle?
The formula isA=πr²(Area=pi(radius²))
Investigate the formula of the area of a circle?
The formula to find the area of a circle is pi x the radius squared.
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 s the formula for the area of a circle?
The formula for the area of a circle is πr2, or pi x radius^2 The radius of a circle is the diameter divided by two, and pi is approx. 3.1415926535
