document.write( "Question 735247: Imagine that one wire is wrapped around a basketball's \"equator\" and another wire is wrapped around Earth's equator. If one foot is added to the basketball's wire, it could form a circle whose diameter is about 3.8 inches greater than the diameter of the basketball. If one foot is added to the Earth's wire, how much greater will it's diameter be?
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Algebra.Com's Answer #449352 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+C+\"$ = the circumference of the Earth in feet
\n" ); document.write( "Let $\"+d+\"$ = the diameter of the Earth in feet
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\n" ); document.write( "Before adding 1 foot to $\"+C+\"$ :
\n" ); document.write( " $\"+C+=+pi%2Ad%5B1%5D+\"$
\n" ); document.write( " $\"+d%5B1%5D+=+C+%2F+pi+\"$
\n" ); document.write( "--------------
\n" ); document.write( "After adding 1 foot to $\"+C+\"$
\n" ); document.write( " $\"+C+%2B+1+=+pi%2Ad%5B2%5D+\"$
\n" ); document.write( " $\"+d%5B2%5D+=+%28+C+%2B+1+%29+%2F+pi+\"$
\n" ); document.write( "--------------
\n" ); document.write( "The increase in diameter is:
\n" ); document.write( " $\"+d%5B2%5D+-+d%5B1%5D+=+%28+C+%2B+1+%29+%2F+pi+-++C%2Fpi+\"$
\n" ); document.write( " $\"+d%5B2%5D+-+d%5B1%5D+=+%28+1%2Fpi%29%2A%28+C+%2B+1+-+C+%29+\"$
\n" ); document.write( " $\"+d%5B2%5D++-+d%5B1%5D+=+1%2Fpi+\"$
\n" ); document.write( " $\"+d%5B2%5D+-+d%5B1%5D+=+.31831+\"$ ft
\n" ); document.write( " $\"+d%5B2%5D+-+d%5B1%5D+=+.31831%2A12+\"$ in
\n" ); document.write( " $\"+d%5B2%5D+-+d%5B1%5D+=+3.8+\"$ in
\n" ); document.write( "The diameter increases by the same amount\r
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