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A right circular cylinder has height as ...

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

Text Solution

Verified by Experts

The correct Answer is:
B
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A right circular cylinder has height as 18 cm and radius as 7 cm. The cylinder is cut in three equal parts (by 2 cuts parallel to base). What is the percentage increase in total surface area?

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A cuboid of size 50 cm x 40 cm x30 cm is cut into 8 identical parts by 3 cuts. What is the total surface area (in cm^2 ) of all the 8 parts? एक घनाभ जिसका माप 50 से.मी. x 40 से.मी x 30 से.मी. है, को 3 कटाव के दवारा 8 समान भागों में काया जाता है। इस सभी का कूल पृष्ठीय क्षेत्रफल ( से.मी.^2 ) क्या है?

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