document.write( "Question 927639: a circular park of radius 12m has a road 4m wide running round it. find the cost of metalling the road at the rate of Rs.16 per sq.meter. \n" ); document.write( "
Algebra.Com's Answer #563164 by srinivas.g(540)\"\" \"About 
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radius of the park(r) = 12 m
\n" ); document.write( "perimeter of the park = 2*Pi*r
\n" ); document.write( " =2*3.14*12
\n" ); document.write( " =75.36 m
\n" ); document.write( "wide =4 m
\n" ); document.write( "area of the road = perimeter x wide
\n" ); document.write( " = 75.36 x 4
\n" ); document.write( " = 301.44 square meters
\n" ); document.write( "cost per square meter = RS 16
\n" ); document.write( "Total cost = 301.44 x16
\n" ); document.write( " = RS. 4823.04
\n" ); document.write( "Result : Cost = RS .4823.04
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