Subtract 5 from both sides
40 x 26.5 /2 is 530which is b
B
There isn't much to explain here. It's vocabulary
We know that
volume of the box=length*width*height
V=L*W*H----> H=V/[L*W]
V=576 in³
L=12 in
W=8 in
so
H=576/[12*8]----> H=6 in
the answer is
the height of the box is 6 in