Name ____________________

Date __________________

 

Circumference of a Circle

 

Lesson 1

Problem:

 Find the circumference of a circle with radius HU = 34 m.

 

    http://www.edhelperclipart.com/clipart/geom/circles28.gif

Solution
Step 1:  

Using the formula Circumference = 2π × radius

                              π = 3.14

                         radius = 34 m

   

Solution
Step 2:  

Replacing radius with 34 m and π with 3.14

Circumference of a circle = 2π × radius

                          = 2 X 3.14 × 34 m

                          = 213.52 m

 

          Answer = 213.52 m

 

Try two practice problems:

Find the circumference of the circles:

 A.

http://www.edhelperclipart.com/clipart/geom/circles22.gif

 

KT=6 cm

B.  

 

http://www.edhelperclipart.com/clipart/geom/circles34.gif

TZ=45 m

 

 

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