document.write( "Question 1066394: A circular park of 28m diameter has been constructed. A 3.5m circular track outside has been developed along the park. Using algebraic formulae, find the area of the track around the park \n" ); document.write( "

Algebra.Com's Answer #681600 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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A circular park of 28m diameter has been constructed.
\n" ); document.write( "The radius of the parK = 14 m
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\n" ); document.write( " A 3.5m circular track outside has been developed along the park.
\n" ); document.write( "The overall radius, track and the park: 17.5 m
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\n" ); document.write( " Using algebraic formulae, find the area of the track around the park
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\n" ); document.write( "Track area (A) = overall area - park area
\n" ); document.write( "A = $\"%28pi%2A17.5%5E2%29\"$ - $\"%28pi%2A14%5E2%29\"$
\n" ); document.write( "A = $\"pi%2A306.25%29\"$ - $\"%28pi%2A196%29\"$
\n" ); document.write( "Factor out pi
\n" ); document.write( "A = $\"pi%28306.25+-+196%29\"$
\n" ); document.write( "A = $\"pi%28110.25%29\"$
\n" ); document.write( "A = 346.36 sq/m
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