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A right circular cylinder has height as 18cm and radius as 7cm. The cylinder is cut in three equal parts (by 2 cuts parallel to base). What is the percentage increase in total surface area?
एक लम्बवत गोलकार बेलन की लम्बाई 18 से.मी. तथा त्रिज्या 7 से.मी. हैं बेलन को तीन बराबर भागों में काटा जाता हैं (आधार के समांतर 2 कटाव द्वारा) कुल पृष्ठाय क्षेत्रफल में कितने प्रतिशत की वृद्धि हुई है?

A

62

B

56

C

48

D

52

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CHAMPION PUBLICATION-2017 TIER-II PAPER(10)-EXERCISE
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  7. "A solid cube has side 8 cm. It is cut along diagonals) of top face to...

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