Area of a Circle
也称为: Circle Area Formula
A = \pi r^2
A = πr²它计算什么
Calculates the area enclosed by a circle given its radius.
变量
| 象征 | 姓名 | 描述 |
|---|---|---|
| A | Area | The area enclosed by the circle |
| r | Radius | Distance from the center to any point on the circle |
工作示例
1
A = π × 7² = π × 492
A = 153.94 sq units结果: 153.94 sq units
常见错误
Use radius, not diameter — if given diameter, divide by 2 first
尝试计算器
相关公式
#geometry#circles#area