WebJun 30, 2024 · If you want to know how to find the diameter of a circle, particularly how to measure the diameter of a circle, it is handy to have a few formulas in your ba... WebMar 28, 2024 · If you're only given the diameter of the circle, you can divide it by two to get the radius. For example, if the diameter of the circle is 10 centimeter (3.9 in), then you can divide it by 2 (10/2) to get 5 centimeter (2.0 in) as the radius. [2] 2 Find the area of the full circle and divide it by two.
geometry - Calculate the radius of a circle given the chord length …
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Diameter and radius - Circles, sectors and arcs - BBC Bitesize
WebNov 16, 2024 · The diameter of a circle is any line segment that passes through the center of the circle and has its endpoints on the circle. ... half of its diameter, so to find the … WebHow to Calculate the Area The area of a circle is: π ( Pi) times the Radius squared: A = π r2 or, when you know the Diameter: A = (π/4) × D2 or, when you know the Circumference: A = C2 / 4π Example: What is the area of a … WebJan 30, 2024 · Since the diameter extends all the way across the circle, the diameter is equal to two radii. A simple way to write this is d = 2r. This means you can always replace a d with a 2r in a math problem, or the other way around. We'll be using d, not 2r, since your math problem tells you what d equals. boys summer loafers and boat shoes