In the diagram above, O is the center if the two concentr...
In the diagram above, O is the center if the two concentric circle of radii 13cm and 10cm respectively. Find the area of the shaded portion in the sector with angle 1200 at the center
13πcm2
πcm2
3πcm2
23πcm2
46πcm2
Correct answer is D
120π360(R2−r2)13×π(132−102)13×π×69=23πcm2
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