Use the normal approximation to the binomal to find the probability for n=50, p=0.9 and x< or equal to 40. round z value calculations to 2 decimal places and final answer to 4 decimal places

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )