Earth's diameter is
A. about 10,000 km (6,000 mi.).
B. about 20,000 km (12,000 mi.).
C. about 40,000 km (24,000 mi.).
D. about 50,000 km (30,000 mi.).
Answer:C
Earth's diameter is
A. about 10,000 km (6,000 mi.). B. about 20,000 km (12,000 mi.). C. about 40,000 km (24,000 mi.). D. about 50,000 km (30,000 mi.).