2006-11-28 08:37:45 · 14 answers · asked by gooseberry 1 in Science & Mathematics ➔ Mathematics
Area of a cicrle = PI * (Radius ^2)
=> Radius = square root of (Area / PI)
Yes it is simple maths but the previous answer by Sklinky was how to get the radius from the circumference.
For most purposes assume PI = 3.14
Circumference = 2 * PI * r
2006-11-28 08:44:45 · answer #1 · answered by Mike 4 · 1⤊ 0⤋
The Area of a circle is calculated by Pi x r squared
Therefore r squared = Area/Pi
Therefore r=Square root of Area/Pi
Regards
2006-11-28 16:56:16 · answer #2 · answered by fitzchivarlry 1 · 0⤊ 0⤋
the area of a circle is pi multiplied by the radius squared
2006-11-29 12:04:17 · answer #3 · answered by Anonymous · 0⤊ 0⤋
The area of circle a=pi * r^2. so r=square root of a/pi.
2006-11-30 06:22:03 · answer #4 · answered by Sam 4 · 0⤊ 0⤋
Area = Pi*radius^2
Area/pi=radius^2
Squareroot (area/pi)=radius
I think thats right...
2006-11-29 04:56:29 · answer #5 · answered by chatachanman 1 · 0⤊ 0⤋
radius=(the square root of( the area divided by pi)).
pi =3.142
2006-11-28 16:47:04 · answer #6 · answered by Arthur C 2 · 0⤊ 0⤋
if r is the radius and A is the area
pi*(r^2)=A
r^(2)=A/pi
>>r={(A/pi)^(1/2)}
i hope that this helps
2006-11-28 17:32:04 · answer #7 · answered by Anonymous · 0⤊ 0⤋
area = pi * r^2
so divide the area by pi and then take the square root.
2006-11-28 16:45:21 · answer #8 · answered by Andrew H 4 · 1⤊ 0⤋
A = pi x r^2
A/pi = r^2
SQRT(A/pi) = r
where A = area and r = radius
2006-11-28 20:47:31 · answer #9 · answered by Kemmy 6 · 0⤊ 0⤋
Area = pi*r^2
So r^2 = Area/pi and r = squareroot(Area/pi)
2006-11-28 16:41:34 · answer #10 · answered by vahucel 6 · 2⤊ 0⤋