document.write( "Question 941900: the inner circumference of a circular track is 220m. The track is 7m wide everywhere. calculate the cost of putting up a fence along the outer circle at the rate of rs 2 per metre. \n" ); document.write( "

Algebra.Com's Answer #574169 by macston(5194) $\"\"$ $\"About$

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$\"circumference%28C%29=pi%282r%29\"$
\n" ); document.write( " $\"radius%28r%29=C%2F2%2Api\"$
\n" ); document.write( " $\"r=220m%2F2%2Api=35m\"$
\n" ); document.write( "the width of the track adds 7m to the radius
\n" ); document.write( "outside radius=35m+7m=42m
\n" ); document.write( "outer circumference=OC
\n" ); document.write( " $\"OC=pi%282r%29=pi%282%2A42m%29=pi%2884m%29=264m\"$
\n" ); document.write( "264m of fence at rs 2 /meter= rs 528\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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