math
posted by Sasha .
Edna and Nancy leave the house of a common friend at the same time and walk for 4 hours. Edna walks due east at the average rate of 4 kilometers per hour and Nancy walks due north at the average rate of 3 kilometers per hour. What is the straightline distance between them in kilometers, at the end of the 4 hours?

on walked 12km, and one walked 16km at right angles.
Isn't this a 345 right triangle? 
Yes, it probably is, but I have a hard time solving problems that involve 345 triangles or anything similar to that.

Wow, Edna and Nancy walk for 16 km and 12 km??
Can't be in 2008, they would get in their SUV's for sure, lol
I see a rightangled triangle with sides 12 and 16, where you have to find the hypotenuse.
Think Pythagoras ! 
lol, thank you. I understand the problem now.

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