I’m really confused on how she got “8-3 x 5” where did she get the 8, 3 and 5 from to get the height of the rectangle in the middle?

Im really confused on how she got 83 x 5 where did she get the 8 3 and 5 from to get the height of the rectangle in the middle class=

Respuesta :

Answer:

I think it’s 64 but don’t take my answer for the right one

Step-by-step explanation: