As shown in the diagram, $\overline{ OA }$ and $\overline{ OB }$ are two radii of $\odot( O , 21 cm )$ perpendicular to each other. If $OD =10 \,cm ,$ find the area of the shaded region. (in $cm^2$)
As shown in the diagram, $\overline{ OA }$ and $\overline{ OB }$ are two radii of $\odot( O , 21 cm )$ perpendicular to each other. If $OD =10 \,cm ,$ find the area of the shaded region. (in $cm^2$)
- A
$1125$
- B
$1106$
- C
$1208$
- D
$1008$
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