alleryπ-কে 22/7 হিসাবে ধরে, 7 cm ব্যাসার্ধের একটি বৃত্তের পরিধি কত?
A22 cm
B44 cm
C38 cm
D154 cm
Answer & Solution
Correct answer: B. 44 cm
পরিধি হল 2 x 22/7 x 7 = 44 cm।
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