1. What is a Volume in Cylinder Calculator?

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

Purpose: It helps engineers, architects, students, and DIYers determine the capacity or volume of cylindrical objects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V \) — Volume (cubic units)
• \( r \) — Radius of the base (units)
• \( h \) — Height of the cylinder (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 determining capacity of containers, pipes, tanks, and other cylindrical structures in engineering and construction.

4. Using the Calculator

Tips: Enter the radius and height in the same units (inches, feet, meters, etc.). All values must be > 0.

5. Frequently Asked Questions (FAQ)

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

Q2: Does this work for pipes and tubes?
A: Yes, as long as they're perfect cylinders. For hollow cylinders, subtract the inner volume from the outer volume.

Q3: What's the value of π used?
A: The calculator uses PHP's built-in M_PI constant (approximately 3.1415926535898).

Q4: How precise are the results?
A: Results are shown to 3 decimal places, but calculations use higher precision internally.

Q5: Can I calculate partial cylinder volumes?
A: This calculates total volume. For partial volumes (like a half-filled tank), you'd need additional calculations.