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B
1−1√2
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C
π4√2
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D
π4√2+1√2−1
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Solution
The correct option is Dπ4√2+1√2−1 Required area = Area of rectangle OABC− Area of curve OABO =π4×1√2−∫π/40sinydy =π4√2+[cosy]π/40 =π4√2+cosπ4−cos0 =π4√2+1√2−1