Answer:
Yeah it is correct
Step-by-step explanation:
you have already given your answer in the question!
Answer:
1. 100
2. 27 
3. 30
Step-by-step explanation:
Area = 

=
x 
= 100
Volume = l x w x h
= 3 x 3 x 3
= 27
I don't know if you have multiple choices, but it could be: 2x-9