In a restaurant, the shape of the top of a table is in the form of a sector of a circle with cen...

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In a restaurant, the shape of the top of a table is in the form of a sector of a circle with centre \( O \) and \( \angle \mathrm{POQ}=90^{\circ} \). If \( \mathrm{PO}=\mathrm{OQ}=60 \mathrm{~cm} \), then the area of the top of the table.
a. \( 1623 \mathrm{~cm}^{2} \)
b. \( 9078 \mathrm{~cm}^{2} \)
c. \( 10078 \mathrm{~cm}^{2} \)
d. None of these
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