A triangular plot with sides of 25 feet, 40 feet and 55 feet is to be surrounded by a fence built on pillars set 5 feet apart How many pillars will be required to surround the plot?

A 21
B 22
C 23
D 24

Correct Answer: 24

Total pillars needed = 25 + 40 + 555 = 1205 = 24
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