Question: What is the latency of a call originating at the North Pole to reach the South Pole if the call is routed via Iridium satellites?

What is the latency of a call originating at the North Pole to reach the South Pole if the call is routed via Iridium satellites? Assume that the switching time at the satellites is 10 microseconds and earth’s radius is 6371 km.

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