An aeroplane leaves an airport and flies due north at a speed of 1000 km per hour

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At thesame time, another aeroplane leaves the same airport and flies due west at a speed of1200 km per hour. How far apart will be the two planes after hours?

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Question

Distance travelled by the plane flying towards north in Triangles = 1,000 *

= 1,500 km

Similarly, distance travelled by the plane flying towards west in Triangles = 1,200 *

= 1,800 km

Let these distances be represented by OA and OB respectively.

Applying Pythagoras theorem,

Distance between these planes Triangles after ,

Triangles

solved 5

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