SOLUTION: A runner is 22km east and 15km south of his starting point. A) How far is he in a direct line from his starting point? B) How long would it take him to return to his starting poi

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Question 954366: A runner is 22km east and 15km south of his starting point.
A) How far is he in a direct line from his starting point?
B) How long would it take him to return to his starting point in a direct line if he can run at 10 km per hour?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
d=distance from start
d=sqrt%2822%5E2km%5E2%2B15%5E2km%5E2%29=sqrt%28484km%5E2%2B225km%5E2%29=sqrt%28709km%5E2%29=26.6km
ANSWER A: The runner is 26.6 kilometers from the starting point.
26.6km%2F10km%2Fhr=2.66hrs
ANSWER B: It would take him 2.66 hours to run to the starting point in a straight line.