For this, it is kind of like a triangle and having to find the diagonal. Let's see what the two legs of the triangle would be.
Leg one= 7 units
Leg two= 8 units
8²+7²= c²
64 + 49=113
√113≈10.6
The line is 10.6 units long.
Use photo math it will help
Is that all the information ? I think they’re missing something
60 x 50 = 3000 meters.......
The answer is six and two out of seven or 6 and two sevenths