A hollow cylindrical pipe is 35 m long. Its outer and inner diameters are 16 cm and
14 cm, respectively. Find the volume of metal (in mº) used in making the pipe.
plz solve this urgently
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Answered by
3
Answer:
Given length of pipe h = 35 m
External radius of cylinder = 16/2 = 8 cm= 0.08 m
External volume of cylinder = π x0.08x0.08x35
Internal radius of cylinder = 14/2 = 7 cm = 0.07 m
Internal volume of cylinder = π x0.07x0.07x35
Volume of pipe = External volume - Internal volume
= π X 35 (0.08x0.08 - 0.07 x0.07)
= 22/7 X 35 (.0064-.0049)
= 110 X 0.0015
= 0.165m^3
Answered by
1
Answer:
0.165m³
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