document.write( "Question 15707: What is the circumference of a circle with a diameter of 30 centimeters? \n" ); document.write( "
Algebra.Com's Answer #8112 by piglet162431(90)\"\" \"About 
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Plug in the formula.
\n" ); document.write( "C=2(pi)R
\n" ); document.write( "Since R is the radius, and 2 radius = the diameter, and the diameter is 30, the radius is 15.
\n" ); document.write( "C=2(pi)15
\n" ); document.write( "C=2(3.14)(15)
\n" ); document.write( "C=30(3.14)
\n" ); document.write( "C=94.2cm
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