Grave of the fireflies. I’ve only watched it once but out of all movies i’ve ever watched, it’s the one that made me the most emotional. Incredibly powerful.

Draw a symmetrical thingy, the calculations are then simple. I’ll let you figure out on your own what calculation is connected with what geometry:

sqrt(24²⁺⁷2) = 25 25 + 7 = 32 sqrt(32²⁺²⁴2)=40 40/2=20 x = sqrt(25^2-202)=15