Have you noticed that in school assembly you always stand in row and column and this make a
coordinate system. Suppose a school have 100 students and they all assemble in prayer in 10 rows
as given below.
Here A B, ,C and D are four friend Amar, Bharat, Colin and Dravid.
(i) What is the distance between A and B ?
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Answer:
7 one nie zero seven six five fous eight
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Given : Standing in row and column make a coordinate system.
100 students assemble in prayer in 10 rows
To Find :distance between A and B
Solution:
A = ( 3 , 4)
B = ( 6 , 7)
C = (9 , 4)
D = ( 6 , 1)
distance between A and B
A = ( 3 , 4) B = ( 6 , 7)
= √(6 - 3)² + (7 - 4)²
= √3² + 3²
= √18
= 3√2
distance between A and B is 3√2
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