Can someone give an explanation on how to do this please

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.

The curved part of the figure is the semicircle what is the best approximation for the area of this figure