Question

Find cost of fencing a rectangular field having its length 150 m and area 12000m at the rate of 15rs per m

Answer 1

area of field = 12000m = l x b
                    = 12000/ 150 = breadth
breadth = 800 m
perimeter of the field= 2 ( l+ b)
                                 = 2 (150+800)
                                 = 2 x 950
                                 = 1900m
cost of fencing= 1900 x 15
                       = Rs 28500