The city-states of ancient Mesopotamia were independent cities constructed around temples and entirely self-contained within mighty perimeter walls.<span> City-states were unified with each other only by their shared use of the Sumerian language. They spent most of their time engaged in conflict over resources.</span>
Answer:
144pi sq. units
Explanation:
The formula for finding the surface area of a sphere is 4π
Substitute 6 in for r. 4π = 144π
