Area of a circle
The area of a circle is the measure of the region enclosed by the boundaries of a circle
The area of a circle is the measure of the region enclosed by the boundaries of a circle. It is defined as the total number of square units that can fit inside the circle.
To calculate the area of a circle, you can use the formula: A = πr², where A represents the area, π (pi) is a mathematical constant approximately equal to 3.14159, and r is the radius of the circle.
The radius is the distance from the center of the circle to any point on its edge. It is denoted by the letter “r” in the formula. If you know the radius of a circle, you can simply substitute its value into the formula and solve for the area.
For example, let’s say we have a circle with a radius of 5 units. Plugging the value into the formula, we have:
A = π(5)²
A = π(25)
A ≈ 78.54 square units
So the area of this particular circle would be approximately 78.54 square units.
It’s important to note that the area of a circle is always expressed in square units, since it represents a two-dimensional measurement. Additionally, the value of π is an irrational number, meaning it cannot be expressed as a simple fraction or a terminating or repeating decimal.
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