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Perimeter of a trapezoid

Perimeter of a trapezoid is the total distance around it and it is calculated by summing the length of all its four sides.

Perimeter of a trapezoid

P = a + b + c + d

Where P is perimeter, and a, b, c, and d are the sides of the trapezoid.

Example:
If: a = 4, b = 8, c=3, and d = 5
then P = ?

P = a + b + c + d = 4 + 8 + 3 + 5 = 20 unites