From a point P, Q is 5km due West and R is12km ...
From a point P, Q is 5km due West and R is12km due South of Q. Find the distance between P and R.
5km
12km
13km
17km
Correct answer is C
Using Pythagoras theorem
PR2 = 52 + 122
25 + 144 = 169
PR = √(169)= 13km
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