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Question

The area of the rectangle of maximum area inscribed in the ellipse x225+y216=1 is

A
48
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B
41
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C
40
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D
50
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Solution

The correct option is C 40
Given equation of ellipse x225+y216=1
Area of rectangle inscribed in an ellipse =12(2a)(2b)=2ab
Here a=5,b=4
Area of rectangle =12(2×5)(2×4)
=40 sq.units

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