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CHANDRA PRAKASH

· started a discussion

· 1 Months ago

wrong solution of Q. 59 (Question: 233458.0 )

The outer and inner diameters of the hollow cylinder which are used as radii in the solution without dividing them by 2 and the answer you got is 4 times the actual answer. The right answer is 440 cu. cm.

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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