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?
Select:  A) 978  B) 789  C) 999  D) 778  E) 787

Rationale: a 2 = 3136 = > a = 56 56 * 4 * 3 = 672 – 6 = 666 * 1.5 = 999 answer : c
Answer: C