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 DIY enthusiasts 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 (any units)
• \( L \) — Length of the tube (same units as radius)
• \( \pi \) — Mathematical constant (~3.14159)

Explanation: The formula calculates the area of the circular base (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. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What if my tube is hollow?
A: Calculate both outer and inner volumes and subtract them (V_outer - V_inner).

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

Q3: What's the difference between diameter and radius?
A: Radius is half the diameter. If you have diameter, divide by 2 before entering.

Q4: How precise is the calculation?
A: It uses PHP's pi() function which provides sufficient precision for most practical applications.

Q5: Can this be used for pipes or hoses?
A: Yes, this formula works for any cylindrical object including pipes, hoses, and tubes.