Question

A girl walks 9metre west and 12metre north. How far is she away her initial position? ​

Answer 1

Answer:

15 meter

Step-by-step explanation:

Answer 2

Step-by-step explanation:

9 metre West

12 metre North

Join North Position and the initial position

A triangle is formed

We have length and base but we don't have hypotenuse

Using pythagoras theorem,

(Hyp)² = (Length)² + (Base)²

(Hyp)² = (12)² + (9)²

(Hyp)² = 144 + 81

(Hyp)² = 225

(Hyp) = _/225

(Hyp) = 15

So the girl is 15 meter away from her initial position.