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An aeroplane leaves an airplane and …

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An aeroplane leaves an airplane and flies due north at a speed of 1000km per hour . At the same time ,another aeroplane leaves the same airport and flies due west at a speed of 1200 km per hour . How far apart will two planes after 1½ hours?

Posted by G.Saideep Reddy 7 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Sarthak Gupta 7 years, 2 months ago

Speed 1= 1000km Speed 2 = 1200km First we have to find distance Distance = speed × time Distance = speed 1 × time Distance = 1000 × 3/2 Distance = 3000/2 Distance = 1500 Now, same for speed 2 Distance = speed 2 × time =1200 ×3/2 =3600/2 =1800 Now, use pythogaras theorem H2 = p2 + b2 = 1500×1500+1800+1800 =(22500+ 32400) Now taking 100 common in 22500 and 32400. =100(225 + 324) =100 × 579 Now, H2 = 100×579 H = 100 ×√549 =100×√9 × 61 =100×3√61 =300×√61 Aagya bhai answer

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CBSE > Class 10 > Mathematics