Articles on geometry, mathematics, and the formulas behind everyday objects.https://circumify.com/en-ushttps://circumify.com/blog/circumference-vs-perimeter/https://circumify.com/blog/circumference-vs-perimeter/Circumference and perimeter both measure the distance around a shape. Here's the simple difference, when to use each word, and how to calculate both.Fri, 29 May 2026 00:00:00 GMTcircumferenceperimetercircle geometrymath basicsSayara Haque Promitihttps://circumify.com/blog/diameter-from-circumference/https://circumify.com/blog/diameter-from-circumference/Reverse the circle formula to find diameter from circumference. The simple equation, worked examples, and a free calculator to do it instantly.Fri, 29 May 2026 00:00:00 GMTdiametercircumferencecircle geometryhow-toSayara Haque Promitihttps://circumify.com/blog/how-to-calculate-circumference/https://circumify.com/blog/how-to-calculate-circumference/Find the circumference of any circle from its radius, diameter, or area. Clear formulas, step-by-step worked examples, and a free calculator to check your answer.Fri, 29 May 2026 00:00:00 GMTcircumferencecircle geometrymath formulashow-toSayara Haque Promitihttps://circumify.com/blog/how-to-find-area-of-a-circle/https://circumify.com/blog/how-to-find-area-of-a-circle/How to find the area of a circle using A = πr². Simple steps and worked examples for finding the area from the radius, diameter, or circumference — plus a free calculator.Fri, 29 May 2026 00:00:00 GMTcircleareageometryformulaSayara Haque Promitihttps://circumify.com/blog/how-to-find-radius-from-circumference/https://circumify.com/blog/how-to-find-radius-from-circumference/How to find the radius from the circumference using r = C ÷ (2π). Simple steps and worked examples, plus a free calculator that does it instantly.Fri, 29 May 2026 00:00:00 GMTcircleradiuscircumferencegeometrySayara Haque Promitihttps://circumify.com/blog/radius-vs-diameter/https://circumify.com/blog/radius-vs-diameter/The difference between the radius and diameter of a circle, how to convert between them, and simple examples. Plus a free calculator for radius, diameter, circumference, and area.Fri, 29 May 2026 00:00:00 GMTcircleradiusdiametergeometrySayara Haque Promitihttps://circumify.com/blog/circumference-formula-explained/https://circumify.com/blog/circumference-formula-explained/A clear, illustrated explanation of the circumference formula, the role of π, three common variations, and how to use the formula in real-world problems.Tue, 26 May 2026 00:00:00 GMTgeometryformulastutorialDaniel Whitfield