- A21
- B20
- C24
- D40
Step-by-Step Solution
Perimeter m. Around a closed boundary the last gap ends at the first post, so posts . (24 counts each corner post twice; 21 treats it like a straight line.)
Answer: B) 20
A farmer in Nashik puts fence posts every 2 m all the way round his rectangular farm, starting with a post at a corner. The first few posts are shown. How many posts are there in all?
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