The cost of fencing a square field @ Rs. 20 per metre is Rs.10.080.How much will it cost to lay a three meter wide pavement along the fencing inside the field @ Rs. 50 per sq m Choose the correct choice from the following choices:	A) 73889	B) 27788	C) 73879	D) 73800	E) 2799
Explanation:   perimeter = total cost / cost per m = 10080 /20= 
<gadget id="calculator">10080 /20</gadget>
<output>504</output>
504m   side of the square= 504/4= 
<gadget id="calculator">504/4</gadget>
<output>126</output>
126m   breadth of the pavement= 3m   side of inner square = 126 - 6= 
<gadget id="calculator">126 - 6</gadget>
<output>120</output>
120m   area of the pavement= (126 x126) - (120 x 120) = 246 x 6 sq m   cost of pavement = 246*6*50 = Rs. 73800   Answer: 73800)
<result>D</result>
The cost of fencing a square field @ Rs. 20 per metre is Rs.10.080.How much will it cost to lay a three meter wide pavement along the fencing inside the field @ Rs. 50 per sq m