एक घनाभ जिसकी लंबाई=l, चौड़ाई=b और ऊंचाई=h है उसका पृष्ठ क्षेत्रफल ज्ञात
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Answer:
2(lb+bh+h)
Step-by-step explanation:
2(lb+bh+hl)
Hope it's helpful
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