document.write( "Question 154550: okay...so my next question:
\n" ); document.write( "Calculate the area in metric units:
\n" ); document.write( "Find the difference in the area of a straw with a diameter of 5mm and a straw with a diameter of 7 mm. (show your work)
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Algebra.Com's Answer #113781 by jojo14344(1513)\"\" \"About 
You can put this solution on YOUR website!
Remember:
\n" ); document.write( "\"A=pi%28d%5E2%29%2F4\" -------------------------------> working eqn
\n" ); document.write( "For 5mm\"sigma\":
\n" ); document.write( "\"A%5B1%5D=pi%285%5E2%29%2F4\"
\n" ); document.write( "\"A%5B1%5D=19.625mm%5E2\"
\n" ); document.write( "for 7mm\"sigma\":
\n" ); document.write( "\"A%5B2%5D=pi%287%5E2%29%2F4\"
\n" ); document.write( "\"A%5B2%5D=38.465mm%5E2\"
\n" ); document.write( "The difference: \"A%5B2%5D-A%5B1%5D=38.465-19.625=18.84mm%5E2\"
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo
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