perimeter
a linear measurement of the distance around the outer edge of a figure
Perimeter refers to the total length of the boundary of a two-dimensional shape. It is the measure of the distance around the outside of the shape. The perimeter is measured in units such as inches, centimeters, feet, or meters.
The formula to find the perimeter of a shape depends on the type of shape. For example, the perimeter of a rectangle is found by adding up the length of all four sides, which can be represented by the formula: P = 2(l+w), where P is the perimeter, l is the length, and w is the width of the rectangle.
Similarly, the perimeter of a square can be found by multiplying the length of one side by 4, represented by the formula: P = 4s, where P is the perimeter and s is the length of one side of the square.
The perimeter of a circle is called the circumference and is found by multiplying the diameter (twice the radius) by pi (π). This can be represented by the formula: C = 2πr, where C is the circumference, r is the radius, and π is 3.14 (approximately).
Understanding perimeter is important in various fields such as construction, engineering, and geometry. It helps in measuring the distance around various structures, determining the correct amount of fencing needed, and calculating the amount of materials needed for a particular project.
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