Question 730932: A student travel north for 7km and then west for 5 km.how far is the student from the starting point?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A student travel north for 7km and then west for 5 km.how far is the student from the starting point?
-----
Assume the student starts at (0,0)
7 km north moves him to (0,7)
5 km west moves him to (-5,7)
----
distance from (0,0) to (-5,7) = ?
-----
d = sqrt[5^2+7^2] = sqrt[25+49] = sqrt[74] = 8.6 km
====================
Cheers,
Stan H.
|
|
|
