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এটা বৃত্তৰ কালি 154 sq cm (pi = 22/7)। ইয়াৰ ব্যাস কিমান?

A22 cm
B14 cm
C7 cm
D28 cm
Answer & Solution
Correct answer: B. 14 cm
ব্যাসাৰ্ধৰ বৰ্গ হৈছে 154 x 7/22 = 49, গতিকে ব্যাসাৰ্ধ 7 cm আৰু ব্যাস 14 cm।
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