Mathematics · Mensuration
4 सेमी त्रिज्या वाले एक ठोस संगमरमर के गोले को पूरी तरह से पेंट किया जाना है। यदि 1 सेमी2 के लिए 0.1 मिलीलीटर पेंट की आवश्यकता होती है, तो आवश्यक पेंट की मात्रा ज्ञात कीजिए। (π = 3.14 लीजिए)
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