Area of a circle radius. The radius of a circle calculator uses the following area of a circle formula:
Area of a circle = ×
Area of a circle diameter. The diameter of a circle calculator uses the following equation: ×
Where:
π is approximately equal to 3.14. It doesn't matter whether you want to find the area of a circle using diameter or radius - you'll need to use this constant in almost every case.
Answers & Comments
Direction:
Find the area of each circle.
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Answer:
Step-by-step explanation:
How do you calculate the area of a circle?
Area of a circle radius. The radius of a circle calculator uses the following area of a circle formula:
Area of a circle =
×![r^2 r^2](https://tex.z-dn.net/?f=r%5E2)
Area of a circle diameter. The diameter of a circle calculator uses the following equation:
× ![(d/2)^2 (d/2)^2](https://tex.z-dn.net/?f=%28d%2F2%29%5E2)
Where:
π is approximately equal to 3.14. It doesn't matter whether you want to find the area of a circle using diameter or radius - you'll need to use this constant in almost every case.