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What is a Circle? Video Lecture | Preparation for NCEE - Primary 6
FAQs on What is a Circle? Video Lecture - Preparation for NCEE - Primary 6
| 1. What is a circle? |  |
A circle is a closed curved shape in which all the points on the boundary are equidistant from a fixed point called the center. It is perfectly symmetrical and does not have any corners or edges.
| 2. How is the radius of a circle calculated? | |
The radius of a circle is calculated by measuring the distance from the center to any point on the boundary. It is denoted by the letter 'r' and is half the length of the diameter of the circle.
| 3. What is the circumference of a circle? | |
The circumference of a circle is the distance around its boundary. It can be calculated using the formula C = 2πr, where 'C' represents the circumference and 'r' represents the radius of the circle. π is a mathematical constant approximately equal to 3.14159.
| 4. How is the area of a circle calculated? | |
The area of a circle is calculated using the formula A = πr², where 'A' represents the area and 'r' represents the radius of the circle. This formula multiplies the value of π by the square of the radius to determine the total area enclosed by the circle.
| 5. Can a circle be considered a polygon? | |
No, a circle cannot be considered a polygon. A polygon is a closed shape with straight sides, while a circle is a curved shape with no sides. Additionally, a polygon has angles, while a circle does not have any angles.
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