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Q: How do you find the radius and what is the formula?

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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

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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

pie multiplied by the radius.

Circumference=2*pi*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.

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