Understanding Perimeter Formulas for Different Shapes in Mathematics

perimeter

The perimeter of a shape is the distance around its boundary

The perimeter of a shape is the distance around its boundary. It is calculated by summing up the lengths of all its sides. The formula for finding the perimeter of various shapes is as follows:

1. Rectangle: Perimeter = 2(length + width)
In a rectangle, the length refers to the longer side, and the width refers to the shorter side.

2. Square: Perimeter = 4 * side length
In a square, all four sides are equal in length.

3. Triangle: Perimeter = sum of all three sides
All three sides of a triangle are added together to find the perimeter.

4. Circle: Perimeter = 2πr or πd
In a circle, the perimeter is often called the circumference and is calculated using either the radius (r) or the diameter (d).

5. Regular Polygon: Perimeter = number of sides * side length
A regular polygon is a polygon with equal side lengths and identical internal angles.

It’s important to note that perimeter is measured in units of length, such as inches, meters, or centimeters. Always make sure that the units of measurement are consistent when calculating the perimeter.

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