Mathematics · Mensuration
लोहे के एक खोखले बेलनाकार पाइप की लंबाई 35 सेमी है। इसके बाहरी और आंतरिक व्यास क्रमशः 10 सेमी और 8 सेमी हैं। यदि 1 सेमी3 लोहे का वजन 7 ग्राम है, तो पाइप का वजन ज्ञात कीजिए। (π = 22/7 लीजिए)
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