Plz solve this my boards are coming
Iron Pipe is 21m long and its exterior diameter is 8cm and thickness is 1cm. iron weight is 8gm/cm3
Find weight of the pipe
Answers
Step-by-step explanation:
lenght=21m=21*100=2100cm which is height (* means multiplied)
exterior diameter=8cm
radius=d/2
=8/2
=4cm
let us take exteror radius as R
thickness=1cm
iterior radius=exteriror(outer) radius-thickness
=4-1
=3cm(let inner radius be r
volume of pipe (which is hollow)=π(R squrae-r squrae)*height
=22/7(4 squrae-3 squrae)*2100
=22/7(16-9)*2100
=22/7*7*2100
=46200cubic cm
weight = 46200*8
=369600gram
=369.6kilogram
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