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The area of the region lying above x-axi...

The area of the region lying above x-axis, and included between the circle `x^(2) + y^(2)= 2ax` & the parabola `y^(2)=ax, a gt 0` is

A

`8pi a^(2)`

B

`a^(2) ((pi)/(4)-(2)/(3))`

C

`(16 pi a^(2))/(9)`

D

`pi ((27)/(8) + 3a^(2))`

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