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Area of Circle Video Lecture - Class 10

FAQs on Area of Circle Video Lecture - Class 10

1. What is the formula for finding the area of a circle?

Ans. The formula for finding 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 you find the area of a circle when only the circumference is given?

Ans. If only the circumference is given, you can use the formula A = (C^2)/(4π), where A is the area and C is the circumference of the circle.

3. Can you find the area of a circle if you only know the diameter?

Ans. Yes, you can find the area of a circle if you only know the diameter. The formula for finding the area using the diameter is A = (π/4)d^2, where A is the area and d is the diameter of the circle.

4. How do you calculate the area of a sector of a circle?

Ans. To calculate the area of a sector of a circle, you can use the formula A = (θ/360)πr^2, where A is the area, θ is the central angle in degrees, and r is the radius of the circle.

5. Can you find the area of a circle if you only know the area of a sector?

Ans. Yes, you can find the area of a circle if you only know the area of a sector. You can use the formula A = (A_sector*360)/θ, where A is the area of the circle, A_sector is the area of the sector, and θ is the central angle in degrees.

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Oct 19, 2025 Last updated

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