Find out the number of poles needed to 5 meter apart for wire fencing of the rectangle plot with length of 90 meter and width of 50 meter.
Option:
A. 26
B. 28
C. 52
D. 56
Answer: D . 56
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Justification:
Perimeter of the rectangle P = 2 * (L + B) = 2 * (90 + 50) = 2 * 140 = 280 meter.
Number of poles needed N = P / Distance D = 280 / 5 = 56