Answer:
B
Step-by-step explanation:
Using the cosine ratio in the right triangle and the exact value
cos45° = , then
cos45° = = = ( cross- multiply )
c = 3
The answer is 8x I believe
let's recall that a cube is just a rectangular prism with all equal sides, check picture below.
8/9 divided by 3 = 8/27
have a wonderful day! the steps are down below! :)