Yes . You need the help.
You get the measure of the distance by going round the circle once along the circular boundary, starting from a point and coming to the same point. This distance is called the circumference of the circle.
The circle has a centre. The curved line is also called the circumference of the circle.
The radius is the constant distance of any point on the circumference from the centre.
Diameter is the across distance from a point on the circumference to through the centre to another point on the ciumference. The diameter is twice radius.
There constant ratio of the cirumference, C to the diamter, d always : C/d = pi.
Also, C/(2r) = pi
Hope this helps.
The circle is a basic shape in geometry. A circle is a special case of the closed curved line. A circle has a center point and every point on the closed curved line is the same distance from the center point. The length of the closed curve line of the circle is the circle's circumference. A line from the center point to circle's closed curved line is called the radius of the circle. The length of the circumference is equal to 2 times the radius times pi.
When you find the circumference of the circle you are determining the length of line that forms the circle's basic shape.