Mathematics · Mensuration
एक खोखला गोलाकार शेल 6 ग्राम/सेमी3 घनत्व वाली धातु से बना है। इसकी आंतरिक और बाहरी त्रिज्याएँ क्रमशः 8 सेमी और 9 सेमी हैं। शेल का वजन (किग्रा में) क्या है? (π = 227 लें)
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