A rectangular plot measuring 90 meters by 50 meters is to be enclosed by wire fencing. If the poles of the fence are kept 5 meters apart. How many poles will be needed?
A) 65m
B) 45m
C) 55m
D) 56m
Answer: D) 56m
Explanation:
perimeter of the plot = 2(90+50) = 280m no of poles =280/5 =56m