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Introduction: Circle Video Lecture | Crash Course: Class 10

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FAQs on Introduction: Circle Video Lecture - Crash Course: Class 10

1. What is Circle?
Ans. Circle is a geometric shape that is perfectly round and consists of all points in a plane that are equidistant from a fixed center point.
2. How is the circumference of a circle calculated?
Ans. The circumference of a circle can be calculated using the formula C = 2πr, where C represents the circumference and r represents the radius of the circle.
3. What is the relationship between the diameter and radius of a circle?
Ans. The diameter of a circle is twice the length of its radius. In other words, if the radius is denoted by r, then the diameter can be expressed as 2r.
4. How does the area of a circle relate to its radius?
Ans. The area of a circle can be calculated using the formula A = πr^2, where A represents the area and r represents the radius of the circle. This formula shows that the area is directly proportional to the square of the radius.
5. Can the radius of a circle be negative?
Ans. No, the radius of a circle cannot be negative. The radius is always a positive value that represents the distance from the center of the circle to any point on its circumference.
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