**We Will Briefly Explain the Method for Computing the Weight of a Pipe Made of Iron**

1- Work out the entire cross-sectional area of the pipe.

2- Work out the entire volume of pipe with the following formula.

volume = total cross-sectional area x length of pipe.

volume = total cross-sectional area x length of pipe.

3- Work out the weight of the pipe with the following formula.

weight of pipe = volume of pipe x unit weight of pipe materials.

weight of pipe = volume of pipe x unit weight of pipe materials.

**Example**

The Calculation for Find Out the Weight of this Cast Iron Pipe is Made on the Basis of the Following Dimensions

The internal diameter of the pipe = 10 cm

The external diameter of the pipe = 14 cm

Length of the pipe = 5 meters

The external diameter of the pipe = 14 cm

Length of the pipe = 5 meters

As we know from the above formula :

Volume = cross-sectional area x length

V = π (D2 – d2)/4 x L

V = π (D2 – d2)/4 x L

After putting the values, we get the following :

V = π(0.142 – 0.102)/4 x 5 (covert centimeter to meter)

V = 0.0376991 cu.m

So, weight = 0.0376991 x 7200 (as unit of cast iron is equivalent to 7200 kg/m3)

So, weight = 0.0376991 x 7200 (as unit of cast iron is equivalent to 7200 kg/m3)

Weight of pipe = 271.433 kg

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