You have been asked to measure and conduct various tasks on a round steel pipe with the following dimensions – internal diameter = 150mm and length = 4.5m.

Calculate the volume (in m3) of the round steel pipe (to 2 decimal places). (Use 3.14 for Pi)

To calculate the volume of a round steel pipe, we first need to find the volume of the entire cylinder and then subtract the volume of the hollow portion (if it's not solid). However, in this case, the question is only concerned with the volume of the internal hollow part of the pipe, using the internal diameter.

### Formula for the volume of a cylinder:
\[
V = \pi r^2 h
\]

Where:
- \( r \) is the radius of the internal diameter (half of the internal diameter),
- \( h \) is the height or length of the pipe,
- \( \pi \) is approximately 3.14.

### Given:
- Internal diameter = 150 mm = 0.15 m (since 1 m = 1000 mm),
- Radius \( r \) = 0.15 m / 2 = 0.075 m,
- Length \( h \) = 4.5 m.

### Now, substitute the values into the formula:

\[
V = 3.14 \times (0.075)^2 \times 4.5
\]

Let’s calculate this.

The volume of the round steel pipe is \( 0.08 \, \text{m}^3 \) (to two decimal places).

Would you like further details or have any questions?

Here are 5 related questions you might find interesting:
1. How would the volume change if the internal diameter increased to 200 mm?
2. What is the external volume if the thickness of the pipe is 10 mm?
3. How much weight could the pipe hold if filled with water (density = 1000 kg/m³)?
4. How would you calculate the surface area of the internal pipe?
5. How would the length of the pipe affect its internal volume?

**Tip**: Always ensure that units are consistent (e.g., mm to m) when performing calculations.

You have been asked to measure and conduct various tasks on a round steel pipe with the following dimensions – internal diameter = 150mm and length = 4.5m. Calculate the volume (in m3) of the round steel pipe (to 2 decimal places). (Use 3.14 for Pi)

Calculate the internal volume of a round steel pipe with a diameter of 150mm and length of 4.5m using the cylinder volume formula V = πr^2h. This step-by-step guide helps convert units and find the correct volume in cubic meters, suitable for students in Grades 9-12.

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