Question

the area of a rectangular field is 4 hectare find its length if the breadth is 160 M also find the cost of fencing its boundary at the rate of rupees 5.20 per metre ( 1 hectare = 10000 sq m) pls explain in statement

Answer 1

Given,

area = 4 hectares
         = 4*10000 m^2
          = 40000 m^2
 
breadth = 160 m
  
area= length * breadth
40000 = length * 160
length = 40000/160
          = 250m

perimeter = 2(l+b)
                 = 2(160+250)
                 = 2*410
                 = 820 m

Cost of fencing the boundary = perimeter * 5.20
                                               = 820 *5.20
                                               = Rs.4264