question_answer

Nivedita stops to walk after covering a distance of 10 km to the west. She then turns to the right and walks 8 km. Again she walks 4 km to the right. How far is she from her office?

A)  18 km 

B)  8 km

C)  16 km 

D)  10 km

Correct Answer: D

Solution :

OS =10 KM, RS = PQ = 8 km RP = SQ = 4 km \[\therefore \]\[\,OQ=1=-4=6\,\,km\] From\[\Delta OPQ\] \[\,PO=\sqrt{{{6}^{2}}+{{8}^{2}}}\] \[=\sqrt{36+64}=\sqrt{100}=10\]