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Quarter Circle

Geometry Level 1

In the above quarter circle of radius 1, what is the area of the blue region?

\[ \frac{ \pi } { 8 } \] \[ \frac{ \pi - 1 } { 6 } \] \[ \frac{ \pi - 3 } { 4 } \] \[ \frac{ \pi - 2 } { 4 } \]

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by Chung Kevin

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