Yes they are
Hope this helps
#1
That is false..one could have side lengths of 9 and 1, and the other could have side lengths of 3. Both the areas would be 9, but the figures would not be congruent.
#2
That is true, they must both have the same side length to have the same perimeter, therefore they will also have the same area.
41 is not a composite number because you can not divide 41 with any number. Therefore, it is prime.
For this problem, you're finding volume. The expression for volume is l•w•h (length times width times height).
I think this is the answer, sorry I am not 100% sure