Area and Perimeter of 2D: Circle, Triangle shapes A circle is a plane figure with no corners or edges, and its perimeter is the total length of its borde...
A circle is a plane figure with no corners or edges, and its perimeter is the total length of its border. We can find the perimeter of a circle using the formula:
P = 2πr
where:
P is the perimeter
π is a mathematical constant approximately equal to 3.14159
r is the radius of the circle
The radius is half the distance from the center to any point on the circle.
Similarly, the perimeter of a triangle is the total length of its three sides and can be calculated using the formula:
P = a + b + c
where:
P is the perimeter
a, b, and c are the lengths of the three sides of the triangle
The sides of a triangle are the three distinct edges that connect its vertices.
Both circles and triangles can be classified as two-dimensional shapes, meaning they have only two dimensions (length and width).
Here are some examples of area and perimeter for different shapes:
Circle:
Area: πr²
Perimeter: 2πr
Triangle:
Area: (1/2)a × b × c
Perimeter: a + b + c
These formulas provide a framework for calculating the area and perimeter of shapes with specific shapes, allowing us to analyze and compare the sizes of different geometric figures