JAMB - Mathematics (2018 - No. 52)
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
Giải thích
Using Pythagoras theorem
PR\(^2\) = 5\(^2\) + 12\(^2\)
25 + 144 = 169
PR = √(169)= 13km