Mathematics · Mensuration
एक खोखले बेलनाकार पाइप का बाहरी व्यास, ऊंचाई और मोटाई क्रमशः 32 सेमी, 14 सेमी और 0.5 सेमी है। इसके कुल पृष्ठीय क्षेत्रफल का इसके वक्र पृष्ठीय क्षेत्रफल से अनुपात ज्ञात कीजिए।
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