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Examples: Circumference and Area of Circle Video Lecture - Class 7
FAQs on Examples: Circumference and Area of Circle Video Lecture - Class 7
| 1. What is the formula for finding the circumference of a circle? |  |
Ans. The formula for finding the circumference of a circle is C = 2πr, where C represents the circumference and r represents the radius of the circle.
| 2. How can I calculate the area of a circle? | |
Ans. The formula for calculating the area of a circle is A = πr^2, where A represents the area and r represents the radius of the circle.
| 3. Is the circumference of a circle the same as its perimeter? | |
Ans. Yes, the circumference of a circle is the same as its perimeter. The term "circumference" is commonly used when referring to circles, while "perimeter" is used for other shapes. However, they both represent the total length around the shape.
| 4. What is the relationship between the radius and circumference of a circle? | |
Ans. The circumference of a circle is directly proportional to its radius. This means that if the radius is increased, the circumference will also increase, and if the radius is decreased, the circumference will decrease. The relationship is expressed by the formula C = 2πr.
| 5. Can I use the diameter to find the circumference of a circle? | |
Ans. Yes, you can use the diameter to find the circumference of a circle. The formula for calculating the circumference using the diameter is C = πd, where C represents the circumference and d represents the diameter. Since the diameter is twice the length of the radius, the formula is essentially C = 2πr, where r is half of the diameter.
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Dec 17, 2024 Last updated |
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