area of a circle
The area of a circle is the amount of space contained within the circle’s boundaries
The area of a circle is the amount of space contained within the circle’s boundaries. It is represented by the formula A = πr^2, where A is the area, π is a mathematical constant approximately equal to 3.14159, and r is the radius of the circle.
To calculate the area of a circle, follow these steps:
1. Measure the radius of the circle. The radius is the distance from the center of the circle to any point on its boundary.
2. Squaring the radius. Multiply the radius by itself, giving you r^2.
3. Multiply r^2 by π. This yields the area of the circle, A.
For example, let’s say we have a circle with a radius of 5 units. To find its area:
A = π * (5)^2
A = π * 25
A ≈ 78.54 square units
So, the area of the circle with a radius of 5 units is approximately 78.54 square units.
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