The formula is 2pie(radius).
To find the circumference of a circle the formula is: 2*pi*radius or diameter*pi
Circumference=2*pi*radius
The formula to find area is you do the radius squared times pi or 3.14
(radius x radius x pi) divided by 4
The formula is 2pie(radius).
To find the circumference of a circle the formula is: 2*pi*radius or diameter*pi
Well to find the radius it is diameter/2.
Well the formula for the radius of the square is radius squared * pi (3.14)So find the radius (which is half of the diameter. which is exactly half of the shape)and do the formula. end the answer with "m".
you measuresit by the radius
Circumference=2*pi*radius
pie multiplied by the radius.
The formula to find area is you do the radius squared times pi or 3.14
this is called finding the circumference. The formula is 2*pie*radius
(radius x radius x pi) divided by 4
There is a specific formula for finding the radius of a curvature, used often when one is measuring a mirror. The formula is: Radius of curvature = R =2*focal length.
-- 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.