What will be the cost of building a fence around a square plot with area equal to 289 sq ft, if the price per foot of building the fence is Rs. 60?
Choose the correct choice from the following:  A) s.3944  B) s.3948  C) s.4080  D) s.3965  E) s.3929
Let the side of the square plot be a ft.   a2 = 289 =&gt; a = 17   Length of the fence = Perimeter of the plot = 4a = 68 ft.   Cost of building the fence = 68 * 60   = Rs.4080.   Answer: s.4080
<result>C</result>
What will be the cost of building a fence around a square plot with area equal to 289 sq ft, if the price per foot of building the fence is Rs. 60?