Norah knows that the diameter of a circle is 13 meters how would you tell her to find the circumference

Ithink its b) built underground reservoirs

No sé que te dierano sé que te diera,por una mirada, el mundo,por una sonrisa, el cielo,por un beso,ay, no sé que te diera por un beso.veo la lunaveo la luna y la luna ve a mí,que dios bendiga la lunafound the answer in that link. if its wrong just delete my answer so you get your points bck.