Sarah is pulling to the left with a force of 10 Newtons. Andrea is pulling to the right with a force of 15 Newtons. what is the net force is?​

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