Mathematics · Mensuration
24 सेमी कोर (edge) वाले एक ठोस लोहे के घन को पिघलाकर 2 मिमी मोटाई की एक आयताकार शीट में ढाला जाता है। यदि शीट की लंबाई (l) और चौड़ाई (b) 6:5 के अनुपात में हैं, तो l + b (सेमी में) है
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