A hollow cylinder pipe is 56cm sq. long . It's outer and inner radius is 70cm and 16cm respectively. Find the inner used in hoping the pipe?
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Height = 56 CM
outer radii = 70 CM
inner radii = 16 CM
for inner volume of cylinder = πr²h
22/7×16×16×56 = 45,056 cm³
for outer volume of cylinder = πr²h
22/7×70×70×56=862400cm³
Volume of iron used in making the pipe = outer volume of cylinder - inner volume of cylinder
862400 - 45,056 = 817344 cm³
outer radii = 70 CM
inner radii = 16 CM
for inner volume of cylinder = πr²h
22/7×16×16×56 = 45,056 cm³
for outer volume of cylinder = πr²h
22/7×70×70×56=862400cm³
Volume of iron used in making the pipe = outer volume of cylinder - inner volume of cylinder
862400 - 45,056 = 817344 cm³
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