A girl starts walking from her house and travels a distance of 10km to the North. Then she takes a right turn and travels 5km after which she travels 20km South. What is the distance between her house and the final destination?
Answers
Answer:
5km
Step-by-step explanation:
because
first she travelled 15km north
then she travelled 20km south
so 20-15=5km in south directiom
The distance between her house and the final destination is 11.18 km
Solution:
Given that,
A girl starts walking from her house and travels a distance of 10km to the North
Then she takes a right turn and travels 5km after which she travels 20km South
The figure for solving the problem is attached below
Let 'O" be the starting point
OA = distance of 10km to the North
AB = she takes a right turn and travels 5km
BC = after which she travels 20km South
Since, BC = 20 km
AO = 10 km
Thus, DC = 20 - 10 = 10 km
Also,
AB = OD = 5 km
We have to find distance between her house and the final destination
Which means, we have to find length of OC
Also, CDO forms a right angled triangle,
By pythogoras theorem,
From attached figure,
DC = 10 km
OD = 5 km
Therefore,
Thus, the distance between her house and the final destination is 11.18 km
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