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Introduction Areas Related to Circles Video Lecture | Mathematics (Maths) Class 10

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FAQs on Introduction Areas Related to Circles Video Lecture - Mathematics (Maths) Class 10

1. What is the formula for the area of a circle?
Ans. The formula for the area of a circle is A = πr², where A represents the area and r is the radius of the circle.
2. How do you find the circumference of a circle?
Ans. The circumference of a circle can be found using the formula C = 2πr or C = πd, where C is the circumference, r is the radius, and d is the diameter of the circle.
3. What is the relationship between the radius and diameter of a circle?
Ans. The diameter of a circle is twice the length of the radius. This means that if you know the radius, you can find the diameter by multiplying the radius by 2 (d = 2r).
4. How do you calculate the area of a sector of a circle?
Ans. The area of a sector of a circle can be calculated using the formula A = (θ/360) × πr², where A is the area of the sector, θ is the angle in degrees, and r is the radius of the circle.
5. What is the difference between the area and the circumference of a circle?
Ans. The area of a circle measures the space enclosed within the circle, while the circumference measures the distance around the circle. The area is expressed in square units, whereas the circumference is expressed in linear units.
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