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Amar Chandra Kumar

· started a discussion

· 1 Months ago

wrong solution (Question: 233458.0 )

Here R=4 r= 3
Right answer 440

Question:
A hollow cylindrical tube 20 cm long, is made of iron and its external and internal radii are 8 cm and 6 cm respectively. The volume of iron used in making the tube is (Take \(\pi=\cfrac{22}{7}\))
Options:
A) 1760 cu.cm
B) 880 cu.cm
C) 440 cu.cm
D) 220 cu.cm
Solution:

Ans: (a)

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