alleryএকটি বৃত্তের ক্ষেত্রফল 154 sq cm (pi = 22/7)। এর ব্যাস কত?
A22 cm
B14 cm
C7 cm
D28 cm
Answer & Solution
Correct answer: B. 14 cm
ব্যাসার্ধের বর্গ হলো 154 x 7/22 = 49, তাই ব্যাসার্ধ 7 cm এবং ব্যাস 14 cm।
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