Rosala, get the extension for Google Chrome called Adblock, and it'll block all ads!
Parallel lines have the same slopes.
Assuming a mean of 0 and a standard deviation of 1, you would find the probablility values for corresponding z-scores in the back of your book in Table 1, A.1, etc. Anyway, it would be 0.3401.
0.970025 m^2 / 28 m^2 = 0.03464375.
1.205 m*0.805 m = 0.970025 m^2.
