Answer: 1.8
Step-by-step explanation:
For this case we are asked the following question:
"What is the volume of the rubick's cube whose edge measures 3 cm"
By definition, the volume of a cube is given by:

Where:
l: Is the side or the edge of the cube
According to the statement we have:

Substituting:

Finally, the volume of the cube is 
Answer:

The first one is finding the square root of things I believe and I'm not sure about the second one sorry
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