The area of a square field 3136 sq m, if the length of cost of drawing barbed wire 3 m around the field at the rate of Rs.1.50 per meter. Two gates of 1 m width each are to be left for entrance. What is the total cost?
Answer: C
a⊃2; = 3136 => a = 56
56 * 4 * 3 = 672 – 6 = 666 * 1.5 = 999