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Radius of a Cone Calculator Using Volume

Cone Radius Formula:

\[ r = \sqrt{\frac{3V}{\pi h}} \]

cubic units
length units

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1. What is the Cone Radius Formula?

The cone radius formula calculates the base radius of a right circular cone when you know its volume and height. It's derived from the volume formula of a cone by solving for the radius.

2. How Does the Calculator Work?

The calculator uses the cone radius formula:

\[ r = \sqrt{\frac{3V}{\pi h}} \]

Where:

Explanation: The formula rearranges the standard cone volume equation \( V = \frac{1}{3}\pi r^2 h \) to solve for the radius.

3. Importance of Radius Calculation

Details: Calculating the radius is essential in geometry, engineering, and construction when you need to determine the base size of a cone-shaped object based on its volume and height.

4. Using the Calculator

Tips: Enter the volume in cubic units and height in length units. Both values must be positive numbers. The calculator will compute the radius in the same length units as your height input.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use?
A: Use consistent units - if height is in meters, volume should be in cubic meters, and the radius result will be in meters.

Q2: Does this work for oblique cones?
A: No, this formula is specifically for right circular cones where the apex is directly above the center of the base.

Q3: What if I know the diameter instead of radius?
A: The diameter is simply twice the radius, so you can easily convert between them.

Q4: How accurate is this calculation?
A: The calculation is mathematically precise, but real-world accuracy depends on your measurement precision.

Q5: Can I use this for truncated cones?
A: No, this formula is for complete cones. Truncated cones (frustums) require a different formula.

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