Sorry, I'm asking a lot of questions. I need anyone to explain?

Find the total area for the regular pyramid ( follow the answer set up in the picture)

Correct answer brainliest asap an d 99 pointsss what are relative frequencies to the nearest hundredth of the columns of two way table column a 102, 18 colunm b 34, 14 answers choices 0.15 0.25 0.29 0.44 0.56 0.71 0.75 0.85

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8