There are 23 people in this class. what is the probability that at least 2 of the people in the class share the same birthday? start a new thread

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