Foundation
Mathematics Foundation
Surface Area and Volume
Question

The area of the shaded region in the given figure is :

π4 sq. units    

π2 sq. units    

π3 sq. units    

π2sq. units    

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Solution
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We have, 
radius r = 1 unit
θ  = 180º – 60º = 120º
then the area of the shaded region =πr2θ360
  =π(1)2120360=π3sq. unit

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