document.write( "Question 554607: An eighteen inch pizza arrived at a boys table. The crust was one inch wide all the way around the pizza. What percent of the pizza is crust?
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Algebra.Com's Answer #361415 by Alan3354(69443)\"\" \"About 
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An eighteen inch pizza arrived at a boys table. The crust was one inch wide all the way around the pizza. What percent of the pizza is crust?
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\n" ); document.write( "The outside radius is 9, the inside is 8 inches
\n" ); document.write( "It's a function of the square of the radius.
\n" ); document.write( "(8^2/9^2) = 64/81 is the inside
\n" ); document.write( "17/81 is the crust
\n" ); document.write( "==~ 21% is the outside crust.
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