Three friends Nitin, Alok and Deepika live in societies represented by the points A, B and C respectively. They all work in the same office located at O. So, they decided to share a cab to
(b) B
(b) √34 units
(d) None of these
10¹ Mathematics (Standard)
A
(d) Both A and C
47. What is the distance between A and C?
go to the office.
40. Which society is nearest to the office?
(a) A
(c) C
(a) √33 units
(c) √48 units
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Answer:
Answer for 46 is option c)
Answer for 47 is option b)
Explanation:
Solution for 46
coordinates for A(2,8)
for B(7,7)
for C(5,3)
Distance of a point from origin=√(x^2+y^2)
Using the formula,
distance of point A from origin O is √68 units
distance of point B from origin O is √98 units
distance of point C from origin O is √34 units
As point C is closest to the origin, correct option is c)
Solution for 47
Distance between two points= √(x2-x1)^2+(y2-y1)^2
Using the formula, distance between points A and C
=√(5-2)^2+(5-3)^2
=√(3)^2+(-5)^2
=√9+25
=√34
So the correct option is b)
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