Homework Help

What am I finding when I find the circumference of a circle?I really need help on this

user profile pic

lyla95 | Student, Undergraduate | eNotes Newbie

Posted April 22, 2009 at 10:15 AM via web

dislike 1 like

What am I finding when I find the circumference of a circle?

I really need help on this

2 Answers | Add Yours

user profile pic

jovona | (Level 1) Salutatorian

Posted April 22, 2009 at 11:00 AM (Answer #1)

dislike 1 like

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.

user profile pic

neela | High School Teacher | (Level 3) Valedictorian

Posted June 25, 2009 at 3:26 AM (Answer #2)

dislike 1 like

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.

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes