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Question

The area enclosed by the curves |y+x|1,|yx|1 and 2x2+2y2=1 is

A
(2+π2) sq. units
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B
(2π2) sq. units
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C
(3+π2) sq. units
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D
(3π2) sq.units
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Solution

The correct option is B (2π2) sq. units
The curves y+x1and|y - x|\leq 1formasquareABCDand2x^{2} + 2y^{2} = 1isacircleofradius\dfrac {1}{\sqrt {2}}andcentre(0, 0).Therefore,requiredarea=Areaofsquare-Areaofcircle= \left (2 -\dfrac {\pi}{2}\right ) $ sq. units
706195_670521_ans_e0e0ba7b34c543bd9c846fa0edd5f207.png

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