Perimeter

The perimeter of a shape is the distance around the outside of the shape. It is the total length of all the sides of the shape.

The formula to find the perimeter of a shape depends on the type of shape:

• For a rectangle: Perimeter = 2 * (length + width)
• For a square: Perimeter = 4 * side length
• For a triangle: Perimeter = sum of the lengths of all three sides
• For a circle: Perimeter (also known as circumference) = 2 * π * radius

When finding the perimeter, it is important to make sure all the measurements are in the same unit (e.g., inches, centimeters, etc.).

For example, if you have a rectangle with a length of 5 inches and a width of 3 inches, you would calculate the perimeter as follows:

Perimeter = 2 * (5 + 3) = 2 * 8 = 16 inches

So, the perimeter of the rectangle is 16 inches.