Pretty sure that it is the first answer, the one with the back point between 6 & 8
Answer:
Step-by-step explanation:
It’s a cube with edge length of 12 cm.
The cube has six faces, and the are ma if each face is 144 cm²
Total surface area = 6×144 = 864 cm²
I'll give you an example
y= 2x+56a-16a+14x
y=16x+40a
you basically just do the letters that are the same together i hope it make sense to you
