Quantitative Aptitude Ques 2468

Question: A drainage tile is a cylindrical shell 21 cm long. The inside and outside diameters are 4.5 cm and 5.1 cm, respectively. What is the volume of the clay required for the tile?

Options:

A) $ 6.96,\pi ,cm $

B) $ 6.76,\pi ,cm $

C) $ 6.75,\pi ,cm $

D) None of these

Show Answer

Answer:

Correct Answer: D

Solution:

  • Volume of clay required $ =\pi ,[ {{( \frac{5.1}{2} )}^{2}}-{{( \frac{4.5}{2} )}^{2}} ]\times 21 $ $ =\pi ,[{{(2.55)}^{2}}-{{(2.25)}^{2}}]\times 21 $ $ =\pi ,(0.3\times 4.8)\times 21 $ $ =30.24\pi ,cm^{3} $
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