### Question

**A farmer built a fence around his square plot. He used 27 fence poles on each side of the square. How many poles did he need altogether?**

A. 101

B. 102

C. 104

D. 100

**Answer:** C

**Solution:**

Since each pole at the corner of the plot is common to its two sides, so we have :

Total number of poles needed = 27 x 4 – 4

= 108 – 4

**= 104**