Un camion care transporta marfa a facut intr-o zi trei curse pe distantele direct proportionale cu numerele 10,13,15, calculati distanta parcursa de camion la fiecare cursa, stiind ca suma dintre cea mai mica cursa si cea mai lunga este de 75 KM.

Kis the midpoint of bc

Use pythagorean’s theorem and find the missing side lengths of the two smaller triangles and add them together
13^2 - 12^2 = 5
15^2 - 12^2 = 9
5+9 = 14
14 is the length of each side of the square
14^2 + 14^2 = 19.8
19.8 is the diagonal length of the inside if the square