Dyou make a tree diagram and list all the possible outcomes for flipping a coin and rolling a six sided die how many possible outcomes are

First the number of possible outcomes for two events is the product of the number of outcomes for each event ... in this case:

number of outcomes=2*6=12 (because you have six number and heads and tails)

Now if you wanted to list out the possible outcomes ... which is tedious and useless once you can find it as a product like done above ...

h1, h2, h3, h4, h5, h6, t1, t2, t3, t4, t5, t6