How to find the radius of a circle with a chord

In this video we look at one way to use a chord length to find the radius of a circle. In this video we look at one way to use a chord length to find the radius of a circle.

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Circles in Maths

A chord of a circle is equal to its radius. Find the angle subtended by this chord at a point in the major segment. Solution: Let O be the centre, and AB be the chord of the circle. So, OA and OB be the radii. Given that chord of a circle is equal to

How to find radius of circle when length of chord is given

A chord of length 20 cm is drawn at a distance of 24 cm from the centre of a circle. Find the radius of the circle. Solution : Here the line OC is perpendicular to AB, which divides the chord of equal lengths. In Δ OCB, OB2 = OC2 + BC2 OB2

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