alleryएका पातळ दंडगोलाकार कवचाचे घनफळ कशाच्या बरोबर असते?
A2π × आतील त्रिज्या × उंची × जाडी
B2π × सरासरी त्रिज्या × उंची × जाडी
C4π × सरासरी त्रिज्या × उंची × जाडी
Dπ × सरासरी त्रिज्या² × उंची × जाडी
Answer & Solution
Correct answer: B. 2π × सरासरी त्रिज्या × उंची × जाडी
कवच उलगडल्यास सरासरी त्रिज्येच्या 2 pi पट लांबीची आणि दिलेल्या उंची व जाडीची एक पातळ पट्टी मिळते.
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