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1 dzień temu · The area of a circle calculator helps you compute the surface of a circle given a diameter or radius. Our tool works both ways — no matter if you're looking for an area-to-radius calculator or a radius to the area one, you've found the right place
- Semicircle Area Calculator
With this semicircle area calculator, you can quickly find...
- Central Angle Calculator
In this model, the Sun is at the center of the circle, and...
- Segment Area Calculator
In our example, we want to find the area of the...
- Circumference to Diameter Calculator
Diameter and circumference are lengths related to each other...
- Circle Formula Calculator
Suppose you have a circle of radius 3 cm. If you want to...
- Arc Length Calculator
Let's say it is equal to 45 degrees, or π/4. Calculate the...
- Surface Area Calculator
Our surface area calculator can find the surface area of...
- Sphere Volume Calculator
Enter the radius of the sphere. For size 5 soccer ball...
- Semicircle Area Calculator
Area of a Circle Calculator. Use this calculator to easily calculate the area of a circle, given its radius in any metric: mm, cm, meters, km, inches, feet, yards, miles, etc.
Calculate the area of a circle given the radius, diameter, or circumference. Plus learn the formulas and steps to find a circle's area.
How to Calculate the Area. The area of a circle is: π ( Pi) times the Radius squared: A = π r2. or, when you know the Diameter: A = (π/4) × D2. or, when you know the Circumference: A = C2 / 4π. Example: What is the area of a circle with radius of 3 m ? Radius = r = 3. Area = π r2. = π × 32. = 3.14159... × (3 × 3) = 28.27 m2 (to 2 decimal places)
2 dni temu · The circle area formula is one of the most well-known formulas: Circle Area = πr², where r is the radius of the circle; In this calculator, we've implemented only that equation, but in our circle calculator you can calculate the area from two different formulas given: Diameter; Circle Area = πr² = π × (d / 2)²; Circumference; Circle Area ...
6 dni temu · c = 2πr. A = πr² = πd²/4. where: c stands for circumference; r for radius; and. d for the diameter of the circle. π is a constant approximately equal to 3.14159265359 and, among other things, represents the circumference-to-diameter ratio of any circle. How to find the circumference and area of a circle.
The area of a circle with radius [latex]\large{r}[/latex] is calculated by multiplying the constant [latex]\color{blue}\large\pi [/latex] to the square of the radius, [latex]\large{{\color{red}r}^2}[/latex]. By the way, the irrational number [latex]\large\pi [/latex] is the ratio of the circumference of a circle to its diameter which is ...
