perimeter
the distance around a two-dimensional shape
The perimeter of any two-dimensional shape is the distance around the shape or the total length of all sides of the shape.
To find the perimeter of a rectangle, you add the lengths of all four sides together using the formula P= 2(l+w), where P is the perimeter, l is the length, and w is the width.
To find the perimeter of a square, you can use the formula P= 4s, where P is the perimeter and s is the length of one side.
To find the perimeter of a triangle, you add the lengths of all three sides together.
To find the perimeter of a circle, you use the formula P= 2πr, where P is the perimeter, π (pi) is a mathematical constant approximately equal to 3.14, and r is the radius of the circle (the distance from the center to any point on the edge of the circle).
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