Am i correct on this answer? here is the question
Which of these countries has the greatest population density? Which has the least? Provide an explanation and proof for your answer to receive full credit.

And here is my answer
volume of sq pyramid=1/3 b^2*h
volume of pyramid A = 1/3 * 196 * 6 =196*2 =392
Pyramid B has a volume of 3136 cubic inches vol...a/b =3136/392=8times
percent change = 392/3136 * 100 =12.5%

Question

Am i correct on this answer? here is the question
Which of these countries has the greatest population density? Which has the least? Provide an explanation and proof for your answer to receive full credit.

And here is my answer 
volume of sq pyramid=1/3 b^2*h
volume of pyramid A = 1/3 * 196 * 6 =196*2 =392
Pyramid B has a volume of 3136 cubic inches vol...a/b =3136/392=8times
percent change = 392/3136 * 100 =12.5%