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Question

One of the diameter of the circle circumscribing the rectangle ABCD is 4y = x + 7. If A and B are the points (-3, 4) and (5, 4) respectively, then the area of the rectangle is (in square units)


A

16

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B

32

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C

8

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D

None of these

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Solution

The correct option is B

32


AB = 8, M = (1, 4)

Let centre of circle is O(h, k)

AB is parallel to X axis

MN is parallel to Y axis

h=1

Now 4y = x + 7 is a diameter

4k = h + 7

4k = 1 + 7

k = 2

O(1,2)

OM=2

MN=4

Area =8×4=32


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