The length of a hollow thick cylindrical metallic pipe is 6 cm and its – McqOptions

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1.	The length of a hollow thick cylindrical metallic pipe is 6 cm and its total surface area including the surface at the ends is 98 π scm. If the outer diameter is 8 cm, then the inner diameter in cm is
A.	6.5
B.	7
C.	5
D.	6
Answer» E.

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