document.write( "Question 431134: an 18-foot diameter circular garden has a 4- foot wide walk around it. What is the area of the walk \n" ); document.write( "

Algebra.Com's Answer #299289 by josmiceli(19441) $\"\"$ $\"About$

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Subtract the outer circle from the inner circle
\n" ); document.write( " $\"+A+=+pi%2A%2822%2F2%29%5E2+-+pi%2A%2818%2F2%29%5E2+\"$
\n" ); document.write( " $\"+A+=+pi%2A%28484%2F4%29+-+pi%2A%28324%2F4%29+\"$
\n" ); document.write( " $\"+A+=+%28pi%2F4%29%2A%28484+-+324%29+\"$
\n" ); document.write( " $\"+A+=+%28pi%2F4%29%2A160+\"$
\n" ); document.write( " $\"+A+=+40%2Api+\"$
\n" ); document.write( " $\"+A+=+125.664+\"$ ft2 \n" ); document.write( "

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