Circumference of circle- length of the boundary of a circle or perimeter of a circle is called circumference.
circumference of a circle = 2𝞹r (where 𝞹 = 22/7 and r = radius)
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Concentric circle- (संकेंद्रित वृत्त) If two and more then two circle have same centre but different radii, they are called concentric c...
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Secant of a circle - A line which meet a circle into two points is called a secant of the circle, in given figure XY is a secant.
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Circumference of circle- length of the boundary of a circle or perimeter of a circle is called circumference. circumference of a circle...
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