a hollow cylindrical tube is 3.5m long. if its inner and outer radii are 7cm and 7.7cm respectively,then find the volume of the material used in making the pipe.
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Answer:
11319 cm^2
Step-by-step explanation:
h=350cm
R=7.7
r=7
V= πh(R^2-r^2)
11319cm^2
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