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Perimeter

Perimeter is said to be the length of the boundary or the outline of a 2 dimensional shape. The perimeter of a circle and ellipse is called circumference.

Formulas for Different 2D Shapes

Rectangle

The parameter of the rectangle is twice the times of sum of length and width of rectangle.

P= 2(L + W)

Square

Parameter of the square is 4 times the length of a side.

P= 4a

Triangle

The perimeter of a triangle is the sum of the lengths of all the edges of the triangle.

P = a + b +c

Circle

Total length of the boundary of the circle is known circumference of the circle.

C = 2πr

Where, r is the radius of the circle.

Quadrilateral

The parameter of any quadrilateral is given by:

P = a + b + c + d

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