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1. 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 apart . How many pillars will be required to surround the plot.
- A. 21
- B. 21
- C. 21
- D. 21
Answer: Option D
Explanation:
ত্রিভুজক্ষেত্রের পরিসীমা = 25 + 40 + 55 = 120
∴ পিলারের সংখ্যা = 120/5 = 24
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