A square does not have a radius, as a radius is a line segment that connects the center of a circle to any point on its circumference. In a square, the equivalent of a radius would be the distance from the center to a vertex, which is half the length of a diagonal. To find this distance, you can use the Pythagorean theorem by dividing the length of one side by the square root of 2.
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A square does not have a radius.
A square, with sides of length x units, can have an inscribed circle. Such a circle would have a radius of x/2 units.
Or the square could have a circumscribing circle. This would have a radius of x/sqrt(2) units.
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".
If you have the diameter, then the formula for the area of a semi-circle is:(pi x (diameter/2)2)/2That is,Divide the diameter in two to find the radius (diameter/2)Square the radius (radius x radius)Multiply it by pi (3.1416)Divide the answer by two to find half the circle.Remember your units. The answer will be in square inches, or square centimeters or square somethings.
If yo have the area of the circle, the square is irrelevant. Radius = sqrt(Area/pi)
Area = pi * (radius^2) Where (radius^2) is radius squared, or radius to the second power. do some algebraic steps: Area / pi = radius^2 radius^2 = Area / pi square root (radius^2) = square root (Area / pi) radius = (plus or minus) square root (Area / pi) If you are not working with imaginary numbers then radius = square root (Area / pi)
For a SQUARE, the area is (2r)2 because the length and width are the same. The apothem (radius) is used to find the area of other regular polygons.