Which of the following statements are correct about the constant of proportionality? Select ALL that apply. A. The perimeter of a square is proportional to the length of its sides. This relationship can be expressed by the equation p=4s. The constant of proportionality is 4.
B. The circumference of a circle is proportional to its diameter. The relationship is given by the equation r = пd. The constant of proportionality is d.
C. The radius of a circle is proportional to its diameter. The relationship is given by the equation r = 1/2 d. The constant of proportionality is 1/2
D. The area of a triangle is proportional to its lengths. The relationship is given by the equation A = 1/2 bh. The constant of proportionality is h.