Answer:
615.4 km³
Step-by-step explanation:
Volume of cylinder
Volume of cylinder = πr²h
Volume of cylinder = πr²h= 3.14 × (7 km)² × 4 km [approximately]
= 3.14 × 49 km² × 4 km [approximately]
= 615.44 km³ [approximately]
= 615.4 km³ [approximately, reducing to the nearest tenths]
