Calculating Perimeter: Formulas and Examples for Rectangles, Squares, and Circles

perimeter

The perimeter is the total length of the boundary or the distance around a closed shape, such as a rectangle, square, or circle

The perimeter is the total length of the boundary or the distance around a closed shape, such as a rectangle, square, or circle. It is calculated by adding up the lengths of all the sides of the shape.

To find the perimeter of a rectangle, you can use the formula:
Perimeter = 2 × (Length + Width)

For example, if you have a rectangle with a length of 5 units and a width of 3 units:
Perimeter = 2 × (5 + 3)
Perimeter = 2 × 8
Perimeter = 16 units

To find the perimeter of a square, you can use the formula:
Perimeter = 4 × Side Length

For example, if you have a square with a side length of 6 units:
Perimeter = 4 × 6
Perimeter = 24 units

To find the perimeter of a circle, you can use the formula:
Perimeter = 2 × π × Radius

Note that π (pi) is a mathematical constant approximately equal to 3.14159. The radius is the distance from the center of the circle to any point on its boundary.

For example, if you have a circle with a radius of 7 units:
Perimeter = 2 × 3.14159 × 7
Perimeter ≈ 43.9823 units (rounded to four decimal places)

In summary, the perimeter is the measurement of the total distance around a closed shape. The formulas to find the perimeter depend on the shape, and by using the appropriate formula, you can calculate the perimeter accurately.

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