Mathematics · Mensuration
एक तांबे के गोले का व्यास 6 सेमी है। गोले को पिघलाकर समान वृत्ताकार अनुप्रस्थ काट (cross-section) वाले एक लंबे तार में खींचा जाता है। यदि तार की लंबाई 36 सेमी है, तो उसकी त्रिज्या है:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12.0 सेमी
- 21.5 सेमी
- 31.0 सेमी✓
- 40.5 सेमी
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1.0 सेमी
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