Find the perimeter of the pentagon ABCDE with sides AB = 7cm BC = 11cm CD = 13cm DE = 5cm EA = 9cm.

Perimeter is the sum of the lengths of all sides of a flat geometric figure.

We calculate the perimeter of the pentagon ABCDE by the formula P = AB + BC + CD + DE + EA. It turns out:

7 + 11 + 13 + 5 + 9 = 45 centimeters.

Answer: The perimeter of pentagon ABCDE is 45 centimeters.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.