giving medal.. help me??? :{

The Pentagon is a pentagonal-shaped building near Washington, DC, that is home to the United States Department of Defense. Write a formula for the perimeter of a regular pentagon in terms of the length of a side. Evaluate the formula to find the perimeter of the Pentagon, which has a side length of 921 ft.
a. P = 7s; 6,447 ft
c. P = 5/x; 184.2 ft
b. P = 5s; 4,605 ft
d. P = s - 5; 916 ft

Question

giving medal.. help me??? :{


The Pentagon is a pentagonal-shaped building near Washington, DC, that is home to the United States Department of Defense.  Write a formula for the perimeter of a regular pentagon in terms of the length of a side.  Evaluate the formula to find the perimeter of the Pentagon, which has a side length of 921 ft.
a. P = 7s; 6,447 ft 
c. P = 5/x;  184.2 ft 
b. P = 5s;  4,605 ft 
d. P = s - 5; 916 ft

anonymous · Answer

The perimeter of any polygon is the sum of all the sides. Since the pentagon is a regular polygon, all the sides are the same. There are five sides in a pentagon. Therefore, the perimeter is x+x+x+x+x=5x. Plug in 921ft to get the second part of your answer.

anonymous · Answer

i dont undertand? @vinnv226