alleryএকটি বৃত্তাকার ঢাকনার ব্যাসার্ধ 3.5 cm; এর রিমের দৈর্ঘ্য কত? π = 22/7 ব্যবহার করুন।
A38.5 cm
B44 cm
C22 cm
D11 cm
Answer & Solution
Correct answer: C. 22 cm
রিমের দৈর্ঘ্য হল 2 × (22/7) × 3.5 = 22 সেমি।
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