4. The following cylinders are similar. State the scale factor of the first figure to the second figure. Also state the ratio of their volumes.
18 m
12 m
18
30
20
30 m
12
20 m

F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2