Check the picture below.
bear in mind that, if the right-triangle is an isosceles, is a 45-45-90 triangle, and if we split it from the "vertex" above perpendicular to the base, we end up with two more 45-45-90 triangles.
First one is 672 the second one is 1008 the third one is 1344 the last one is 1512
An equation for that would be.
x => 67
Answer is 14.14
Reason
Using Pythagorean theory
a^2 + b^2 = c^2
The two legs are a and b, the longest diagonal opposite the right angle is c
10^2 + 10^2 = c^2
200 = c^2
Take square root of both sides
14.14 = c
I think the answer is B. idk if im right and im sorry if im wrong