Answer:
First one: 0.4
Second one: 4
Step-by-step explanation:
We find the cube root of 0.064 which is 0.4
In order to find the length of side s, we just cube root 64 because it is 
Approximately 14%
14-12=2
2/14=1/7
1/7*100=14.29
14.29%
Here’s the answer of your question
The second one is the correct equation. The constant to the right should be the diameter squared, while the numbers inside the parentheses should be the opposite.