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What is the Area of a Circle? Video Lecture - Class 7

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FAQs on What is the Area of a Circle? Video Lecture - Class 7

1. What is the formula to calculate the area of a circle?
Ans. The formula to calculate the area of a circle is A = πr², where A represents the area and r represents the radius of the circle.
2. How do you find the radius of a circle if you 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. Is the area of a circle always equal to its circumference?
Ans. No, the area of a circle is not always equal to its circumference. The area of a circle is the measure of the region enclosed by the circle, while the circumference is the distance around the circle.
4. Can the area of a circle be negative?
Ans. No, the area of a circle cannot be negative. The area is a measure of the space enclosed by the circle, and it is always a positive value or zero.
5. How can I use the area of a circle in real-life situations?
Ans. The area of a circle can be used in various real-life situations. For example, it can help in calculating the amount of material needed for a circular tablecloth, the space required for a circular garden, or the amount of paint needed to cover a circular wall.
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