SSC CGL Model Paper 19

Question : 75 of 100

Marks: +1, -0

A hollow cylindrical tube open at both ends is made of a thick metal. If the external and internal radius of the tube are 25 cm and 23 cm respectively. Find the volume of metal in it. Height of the cylinder is 140 cm.

42240 $\cm^ 3$
84480 $\cm^ 3$
21120 $\cm^ 3$
None of the above

Validate

Solution:

\π\h(r_2^2-r_1^2)=r_2=25\cm

r_1=23\cm

22/7×h(26^2-23^2)

22/7×140[625-529]

= 42240

\cm^3

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