It is a federal registration mark in the US.
radius
If you mean the circumference or "perimeter": C = 2(pi)r, where r is the radius of the circle
that symbol means trademark
The circumference of a circle is its perimeter, or the distance around it. It equals 2(pi)r or pi*d, where r is the radius, d is the diameter and pi is 3.14...
The circumference of a circle is the distance all around the edge of the circle. To find the circumference of a circle, you use the formula C equals 2 times pi times r, where pi is equal to 22 over 7 and r is the radius.
radius
If you mean the circumference or "perimeter": C = 2(pi)r, where r is the radius of the circle
Symbol for "registered trademark"
The boundary line that goes around a circle is called the circumference. It is the distance around the circle and can be calculated using the formula (C = 2\pi r), where (C) is the circumference and (r) is the radius. The circumference is a fundamental aspect of circle geometry, reflecting the relationship between the circle's radius and its total perimeter.
The circumference of a circle. This is the total amount of length around the circle. C= Circumference R= radius of the circle Pi=3.14159
that symbol means trademark
2πr r being raduis
of corse
The area. The circumference would be the distance around a circle
The circumference of a circle is its perimeter, or the distance around it. It equals 2(pi)r or pi*d, where r is the radius, d is the diameter and pi is 3.14...
The circumference of a circle is the distance all around the edge of the circle. To find the circumference of a circle, you use the formula C equals 2 times pi times r, where pi is equal to 22 over 7 and r is the radius.
The director circle of a circle with radius r is a concentric circle with radius r*sqrt(2).