document.write( "Question 488213: A cam is in the shape of a circular sector. What is the perimeter of the cam if it has a radius of 1.875 cm and the central angle is 165.58 degrees?
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Algebra.Com's Answer #333321 by Theo(13342)\"\" \"About 
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a circular sector would be an arc.
\n" ); document.write( "if you looked at it from above, it would look something like a slice of a round pie that was cut from the outside of the pie to the center, making a wedge.
\n" ); document.write( "the radius is equal to 1.875 cm
\n" ); document.write( "the central angle is 165.58 degrees.
\n" ); document.write( "the outside arc of the cam would be equal to 165.58/360 * 2 * pi * r
\n" ); document.write( "r is the radius of the circle.
\n" ); document.write( "this becomes:
\n" ); document.write( "165.58 / 360 * 2 * pi * 1.875 which becomes 5.418592829 cm.
\n" ); document.write( "you also have the pieces that go from the ends of the arc to the center.
\n" ); document.write( "those pieces are 1.875 cm apiece.
\n" ); document.write( "the perimeter is therefor equal to the length of the arc plus the pieces that go from the ends of the arc to the center.
\n" ); document.write( "this would be equal to 5.418592829 + 2 * 1.875 which equals 9.168592829 cm.
\n" ); document.write( "here's a reference you can look at regarding area and perimeter of a circular section.
\n" ); document.write( "http://www.efunda.com/math/areas/CircleSectionGen.cfm
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