The thickness of a metallic pipe is 1cm.Its inner diameter is 12cm.What is the volume of metal needed for a pipe of length 1 m?
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volume of metal needed for a pipe =volume of cylinder hollow pipe
=pi. {R^2-r^2}h
where R=12/2+1=7cm
and r=6cm
now
volume=22/7 (49-36).100
=(22/7)x13x100 cm^3
=pi. {R^2-r^2}h
where R=12/2+1=7cm
and r=6cm
now
volume=22/7 (49-36).100
=(22/7)x13x100 cm^3
abhi178:
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