Answer:
1 inch
Step-by-step explanation:
volume of first cylinder = volume of second cylinder because it never changes it stays the same
volume of first cylinder = (pi) (1)^2 (4) = 4pi
height of second cylinder: 4pi = (pi) (2)^2 h
pi would cancel so you are left with 4=4h
where height of second cylinder would be 1 in