Answer:
Correct option: fourth one -> 10 units
Step-by-step explanation:
As the pentagon is regular, all the sides have the same length, so we just need to find the length of the side AE and then multiply by 5.
To find the length of AE we can find the distance from point A to point E:
distance from A to E:
sqrt( (4-2)^2 + (1-1)^2) = 2 units
To the perimeter of the pentagon is 5 * 2 = 10 units.
Correct option: fourth one
