If the area of the square is
36 mm? what is the
circumference of the circle?

[answer]: it is approximately 540 mm in circumference, or to be more exact, 540.244 mm.

if this isn't correct, then sorry, i'm an idiot.

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%