1. What is a Cylinder Volume Calculator?

Definition: This calculator computes the volume of a cylinder based on its radius and height.

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

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V \) — Volume of cylinder (cubic units)
• \( r \) — Radius of the base (units)
• \( h \) — Height of the cylinder (same units)
• \( \pi \) — Mathematical constant (~3.14159)

Explanation: The formula calculates the area of the circular base (πr²) and multiplies it by the height to get the volume.

3. Importance of Cylinder Volume Calculation

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

4. Using the Calculator

Tips: Enter the radius and height in the same units (e.g., both in meters or both in inches). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use?
A: Any consistent units (meters, feet, inches, etc.), but radius and height must be in the same units.

Q2: How precise is the calculation?
A: The calculation uses PHP's M_PI constant (3.1415926535898) for high precision.

Q3: Can I calculate diameter instead of radius?
A: Yes, just divide your diameter by 2 before entering it as the radius.

Q4: Does this work for tubes or pipes?
A: For hollow cylinders, calculate both outer and inner volumes and subtract them.

Q5: How do I convert between units?
A: Convert measurements before calculation (e.g., inches to feet by dividing by 12).