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Enter the radius of a circle and get its perimeter (circumference) instantly. Learn the formula, see examples and FAQs, and explore other circle calculators.
- Luis Hoyos
Find the perimeter of any circle using the formula P = 2πr or P = πD, where r is the radius and D is the diameter. Enter the radius of 5 and get the perimeter of 31.4 units.
Enter the radius of a circle and get the perimeter, diameter, and area of the circle. Learn the definitions and formulas of circle parts and properties, and the constant π.
In this article, we will discuss the “ Circumference of a circle ” or “Perimeter of circle” with its definition, formula, methods to find the circle’s circumference with many solved examples.
- 5 min
- The circumference of a circle is defined as the linear distance around it. In other words, if a circle is opened to form a straight line, then the...
- To calculate the circumference of a circle, multiply the diameter of the circle with π (pi). The circumference can also be calculated by multiplyin...
- The formula for circumference = diameter × π Or, diameter = circumference/π So, the diameter of the circle in terms of circumference will be equal...
- Circumference = 2×π×r C = 2×3.14×24 C = 150.72 inches
- Step 1: Find the radius using the area of the circle formula (A = πr 2 ). Step 2: Now, substitute the radius value in the circumference formula (C...
- If the area of a circle is given, then the formula to calculate the perimeter or a circumference of a circle is given by: C = 2√(πA) units.
- We know that, Circumference = 2πr = 2π(3) = 6π Therefore, the circumference of a circle is 6π cm, if its radius is 3 cm.
- As we know, Circumference of a circle if its diameter is given = π × d units. Substituting d = 7 cm in the formula, we get C = π × 7 = 7π units.
The perimeter of a circle formula has three components, 2 constants and one variable which is the radius of the circle. The formula to calculate the perimeter of a circle or circumference formula can be given as: Perimeter of Circle Formula. Perimeter of a circle = 2 π r = π D units. where, r = radius of the circle. D = diameter of the circle.
Jul 31, 2024 · Enter the radius or diameter of a circle to calculate its circumference and area. Learn the formula, definition, and examples of circumference and pi.
Jul 22, 2024 · This circle calculator finds c (circumference), d (diameter), a (area), and r (radius) of a circle.
