![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
From the diagram the radius of the circle is 14 cm ; ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ac76533bc441c37db3cf8945897d90b1.png\")
The circumference of a circle formula is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2728c2a4e3424ebfa63a5255f7145108.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b4c62b21a4c74a4772048070c84ee58e.png\")
(Substitute ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=67c27c0cfde1d1ff41df60b73f2b2042.png\")
for ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=de67c267749620b1dc5db0fc4922e505.png\")
and 14 for r)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b7f010efdc0a4063d264f61e342ed199.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=32039e62c66d1138f960f934465732ef.png\")
)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c7747511e51435da8b4674ed1ec5f70c.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4f00951716d36bd791a72c0556b5eb88.png\")
)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The circumference of the circle is 88 cm.