Which of the following is not a security alliance that the us belongs to?
a. nato
c. inter-american treaty of reciprocal alliance
b. korean pact
d. lisbon treaty

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm