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

FAQs on Areas Related to Circles Video Lecture - Mathematics (Maths) 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 = 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, where C is the circumference and r is the radius. Alternatively, if you know the diameter (d), you can use C = πd.
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 can be expressed with the formula d = 2r, where d is the diameter and r is the radius.
4. How do you convert the area of a circle from square units to another unit?
Ans. To convert the area of a circle from square units to another unit, you need to multiply the area by the conversion factor of the units. For example, if converting from square meters to square centimeters, you would multiply by 10,000 (since 1 m² = 10,000 cm²).
5. Can the area of a circle be negative?
Ans. No, the area of a circle cannot be negative. Area is a measure of the space contained within a shape, and it is always expressed as a non-negative value.
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