Question

A piece of metal pipe is 77cm long and the inside diameter of a cross section is 4cm and the outside diameter is 4.5m if the metal weighs 8g per cu.cm what is the weight of the piece of pipe

Plz answer this fast

Answer 1

Answer:

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Answer 2

Given, outer diameter of the pipe =4.5cm and inner diameter =4cm

Therefore, outer radius (R) of the pipe =2.25cm and inner radius (r)=2cm

Given, length or height of the cylinder =77cm

So, volume of the cylinder =π(R

2

−r

2

)h=

7

22

×(2.25

2

−2

2

)77=257.125cm

3

Now, weight of the pipe = volume X density =257.125×8g=2057g =2.057kg