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Example : Area related to circle : Video Lecture - 1 Video Lecture - Class 10

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FAQs on Example : Area related to circle : Video Lecture - 1 Video Lecture - Class 10

1. What is the formula to calculate the area of a circle?
Ans. The formula to calculate the area of a circle is A = πr^2, where A represents the area and r represents the radius of the circle.
2. How do I find the radius of a circle if I know its area?
Ans. To find the radius of a circle if you know its area, you can use the formula r = √(A/π), where r represents the radius and A represents the area of the circle.
3. Can the area of a circle be negative?
Ans. No, the area of a circle cannot be negative. The area is always a positive value as it represents the amount of space enclosed by the circle.
4. 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 is denoted by 2r.
5. How can I use the area of a circle in real-life applications?
Ans. The area of a circle has various real-life applications. For example, it can be used to calculate the amount of paint needed to cover a circular wall, the area of land required for circular gardens, or the amount of material needed to make circular rugs or carpets.
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