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Mathematics

Radius

त्रिज्या

In this Class 9 Mathematics topic from the chapter Circles, students learn that the radius is the line segment joining the centre of a circle to any point on its circumference. They explore why all radii of the same circle are equal, use the symbol r, and understand its connection with the diameter through d = 2r. The topic also supports solving problems involving a circle’s circumference and area, while strengthening visual reasoning and accurate use of geometric measurements.

TOPIC PRACTICE

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