The parabolas y2=4x and x2=4y divide the square region bounded by the lines x=4,y=4 and the coordinate axes. If S1, S2, S3 are respectively the areas of these parts numbered from top to bottom; S1:S2:S3 is
A
1:2:3
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B
1:2:1
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C
1:1:1
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D
2:1:2
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Solution
The correct option is B1:1:1 Total area =4×4=16 sq. units Area of S3=∫40x24dx=163=S1 ∴S2=16−163×2=163 ∴S1:S2:S3 is 1:1:1