Manoj starts from his house and moves towards North. After walking a distance of 4 km, he turns left. After walking a particular distance, he reaches Sunita's house. Sunita's house is at distance of 5 km from Manoj's house. Then, Manoj walked a total distance of

Options

A. 1 km
B. 5 km
C. 7 km
D. 3 km

Answer

C

Explanation

It is clear from the figure that ii is a right angle tnangle

So. by Pythagoras theorem.
`4^(2)+x^(2)=5^(2)`
`rArr" x=3 km"`
Thus. Manoj travelled a distance of 7 km.