Answer:
13.6 inches
Step-by-step explanation:
We can use Pythagorean theorem: 
Let c be the diagonal length, a for length, and b for width.
Substitute the values.

c=13.6 inches
The common factor is b since it is divisible by both 2b and 5b
a box plot is a graph that summarizes numerical data based on quartiles, which divide a data set into fourths
So sorry fir it being this late but the answer is B