SOLUTION: a metal pipe of length 35cm.The internal and external diameters of the pipe are 20mm and 28mm. Find the volume of metal used in making pipe, giving your answer in cubic centimeters
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Question 1029181: a metal pipe of length 35cm.The internal and external diameters of the pipe are 20mm and 28mm. Find the volume of metal used in making pipe, giving your answer in cubic centimeters Answer by Cromlix(4381) (Show Source):
You can put this solution on YOUR website! Hi there,
Volume of cylinder (external)= π x r^2 x h
Volume = π x 14^2 x 350 = 215,513.256 mm^3
Volume of cylinder (internal)= π x 10^2 x 350
Volume = 109,955.743 mm^3
215,513.256 - 109,955.743
= 105557.52 mm^3
= 105.558 cm^3 (3 decimal places)
Hope this helps :-)
