Problem: a rectangular lawn of dimensions 80 m * 60 m has two roads each 10 m wide running in the middle of the lawn , one parallel to the length and the other parallel to the breadth . what is the cost of traveling the two roads at rs . 5 per sq m ? 
Options: a ) 6500 , b ) 2779 , c ) 2779 , d ) 3900 , e ) 2781
a