একটি বৃত্তের ব্যাসার্ধ 10.5 সেমি হলে বৃত্তটির পরিধি কত নির্ণয় করুন। 

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SSC CHSL Tier-I Exam 2022 Official Paper (Held On: 16 March, 2023 Shift 4)
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  1. 21 সেমি
  2. 66 সেমি
  3. 30 সেমি
  4. 110 সেমি

Answer (Detailed Solution Below)

Option 2 : 66 সেমি
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প্রদত্ত:

একটি বৃত্তের ব্যাসার্ধ 10.5 সেমি।

অনুসৃত ধারণা:  

বৃত্তের পরিধি = 2πr, যেখানে r = ব্যাসার্ধ

গণনা: 

পরিধি = 2 × (22/7) × 10.5 = 66 সেমি
 
∴ বৃত্তের নির্ণেয় পরিধি (সেমিতে) 66 সেমি।
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