The internal radius of a 2 m long cylindrical pipe is 5 cm. If the thickness of the pipe is
0.10 cm, find the volume of the metal used.
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Answer: =628.157 cm^3
Step-by-step explanation: Internal radius , r= 200 cm
Thickness = 0.1 cm
Therefore External Radius , R= 200.1 cm
h = 5 cm
Therefore , volume of material used= pi ((R x R) - (r x r)) x h
= 3.14 x ((200.1 x 200.1) - (200 x 200)) x 5
= 3.14 x (40040.01 - 40000) x 5
=3.14 x 40.01 x 5
==628.157 cm^3 .
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