The LSA of square based pyramid with equal edges is 144 square root 3. Find the area of base ?

Can someone pls ! pls answer all. no explanation needed..

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?

Solve the inequaliy: (x^2+2)(x−2)^2(6−2x)> 0