19. a 100 m long fence is to be made by fixing a wire mesh on steel poles. each pole has a 1 m vertical portion and a 1 m portion tilted at 45 to the vertical.

19. A 100 m long fence is to be made by fixing a wire mesh on steel poles. Each pole has a 1 m vertical portion and a 1 m portion tilted at 45 to the vertical. What will be the area of wire mesh requiredP (a) 200 m2 (C) 400 mn2 (b) 241.4 m2 (d) 170.7 m2 N