기하학

원 계산기

원의 반지름, 지름, 둘레, 넓이 계산

사용 방법
  1. Select the property of the circle you already know (Radius, Diameter, Circumference, or Area).
  2. Enter the value.
  3. Click Calculate Circle to compute all other properties simultaneously.

공식

Circle formulas:

  • Diameter (d) = 2 × Radius (r)
  • Circumference (C) = 2 × π × Radius (r) = π × Diameter (d)
  • Area (A) = π × Radius (r)²