What is Perimeter? Definition, Meaning & Example
The total distance around the outside of a two-dimensional shape.
TL;DR: The total distance around the outside of a two-dimensional shape.
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Perimeter: The total distance around the outside of a two-dimensional shape.
Explanation
Perimeter is calculated by adding all side lengths. For rectangles, perimeter equals 2(length + width). For squares, perimeter equals 4 times the side. For circles, the perimeter is called circumference and equals 2πr or πd. Perimeter is measured in linear units like meters or centimeters. Perimeter is useful in real-world applications like fencing a garden.
Example
A rectangle with length 5 cm and width 3 cm has perimeter 2(5 + 3) = 16 cm.
Frequently Asked Questions
What is the formula for the perimeter of a rectangle?
Perimeter of rectangle = 2 x (length + width).
What is the perimeter of a circle called?
The perimeter of a circle is called the circumference.
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