It's a 45-45-90 triangle,
where the legs are congruent, and the hypotenuse is sqrt(2) times the length of a leg.
To solve this divide the length and width of the photo by 2. Your new dimensions should be 3in x 4in.
The answer would be 7.5, since 6/9=2/3 and 5/7.5=2/3, then the sides are equal ratios.
A. The median of the data set is 10