Please help quickly as possible please

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

The product of sin 30 degrees and sin 60 degrees is same as the product of