I think it's $21.75 with tax
Step-by-step explanation:
Put the interior angle equal to 180.
It would look something like this:
x+45=180
-45 -45
180-45= 135 so the exterior angle would be 135!
(z^6 - 8)(z^6 + 8) is the answer.
If you verify this by multiplying, you will see that:
(z^6 - 8)(z^6 + 8) = z^(6+6) + 8z^6 - 8z^6 - 64
= z^12 + 0 - 64
= z^12 - 64
Hope this helps,
Brian
Multiply the area of the base by the height of the pyramid and divide it by 3