Answer:
486 pi or 1526.81 km^3
Step-by-step explanation:
The volume of a hemisphere is found by the equation: 2/3(pi*r^3)
Insert the radius 9 km into the equation, 2/3(pi*9^3) -> and solve
2/3(729pi)
(1458/3) pi
486 pi OR multiply by 3.1415926 and get 1526.81 km^3
