A plane takes off in San Francisco at noon and flies toward the southeast. Please help, full question is in detail.?

A plane takes off in San Francisco at noon and flies toward the southeast. An hour later, it is 400 kilometers east and 300 kilometers south of its starting location.
1. Assuming the plane flew in a straight line, how far did it travel?
2. How many degrees south of east did the plane fly?
Update: A
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