Mathematics · Mensuration
एक धातु के गोले का व्यास 6 cm है। इसे पिघलाकर 0.2 cm अनुप्रस्थ-काट व्यास वाले तार में ढाला जाता है। तार की लंबाई (मीटर में) ज्ञात कीजिए।
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