1. What is the Area of Annulus?

The area of annulus is defined as the area of the ring-shaped space between two concentric circles. It represents the enclosed region between the two circles.

2. How Does the Calculator Work?

The calculator uses the annulus area formula:

Where:

• \( A \) — Area of Annulus (m²)
• \( \pi \) — Archimedes' constant (approximately 3.14159)
• \( l \) — Longest Interval of Annulus (m)

Explanation: The longest interval of annulus is the length of the longest line segment within the annulus, which is the chord tangent to the inner circle.

3. Importance of Annulus Area Calculation

Details: Calculating the area of annulus is important in various engineering and mathematical applications, particularly in geometry problems involving concentric circles and ring-shaped objects.

4. Using the Calculator

Tips: Enter the longest interval of the annulus in meters. The value must be valid (greater than 0).

5. Frequently Asked Questions (FAQ)

Q1: What is an annulus?
A: An annulus is a ring-shaped object, the region between two concentric circles.

Q2: What is the longest interval of annulus?
A: The longest interval of annulus is the length of the longest chord that can be drawn within the annulus, tangent to the inner circle.

Q3: Can this formula be used for any annulus?
A: Yes, this formula works for any annulus where you know the longest interval (the chord tangent to the inner circle).

Q4: What are the units of measurement?
A: The calculator uses meters for input and square meters for the area result, but the formula works with any consistent unit system.

Q5: How accurate is this calculation?
A: The calculation is mathematically exact based on the input values, using the precise value of π for computation.