Apizza shop uses 7 pieces of pepperoni on a small pizza. how many pieces of pepperoni will they use if they make 1,398 small pizzas?

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