Humaira starts from her mosque and walks 4 km towards the north. She turns right and walks 15 km, turns right again and walks 6 km, turns left and walks 9 km, and finally turns right and walks 5 km. How far is Humaira from the mosque now?
Correct answer B. 25 km
Explanation
Taking the mosque as the origin, the final position is 24 km east and 7 km south of it. The shortest distance is the square root of (24² + 7²), which is 25 km.
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