General Knowledge
FORMULA RELATING TO CIRCLE
SCIENCE AND TECHNOLOGY
23 June 2026
PRERNA FOR IAS
1. Diameter of a Circle
The diameter is the longest chord of a circle and passes through its center. It divides the circle into two equal halves. The diameter is represented by the symbol d and is equal to twice the radius, expressed as d = 2r. Every circle has infinitely many diameters, all having the same length. The diameter is an important measurement because many circle formulas are based on it. It helps in finding the radius, circumference, and area of a circle. Understanding the diameter is essential in geometry, engineering, architecture, and various real-life applications involving circular objects.
2. Circumference of a Circle
The circumference is the total distance around the boundary of a circle. It is sim
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Learn circle formulas for diameter, circumference, area, arc length, and sector area. Essential geometry concepts with practical applications in engineering and architecture.
Keywords
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