1. What is the Volume of a Tube?

Definition: This calculator computes the volume of a cylindrical tube based on its radius and length.

Purpose: It helps engineers, architects, and students determine the capacity or space occupied by cylindrical objects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V \) — Volume (cubic units)
• \( r \) — Radius of the tube (units)
• \( L \) — Length of the tube (units)
• \( \pi \) — Mathematical constant (~3.14159)

Explanation: The formula calculates the cross-sectional area (πr²) and multiplies it by the length to get the volume.

3. Importance of Tube Volume Calculation

Details: Accurate volume calculations are essential for material estimation, fluid capacity, structural design, and cost calculations.

4. Using the Calculator

Tips: Enter the radius and length in consistent units. The result will be in cubic units of the same measurement.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between radius and diameter?
A: Radius is half the diameter. If you have diameter, divide by 2 before entering.

Q2: Can I use different units for radius and length?
A: No, both must be in the same units for accurate results.

Q3: Does this work for pipes with thickness?
A: This calculates total volume. For hollow pipes, calculate outer and inner volumes separately and subtract.

Q4: What's the precision of π in calculations?
A: We use PHP's pi() function which provides ~15 decimal digits of precision.

Q5: How do I convert the volume to other units?
A: Multiply by appropriate conversion factors (e.g., 1 cubic meter = 1000 liters).