Answers

2016-02-14T11:07:48+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Inthe the two cicles are congruent because their diameterr is equal.(i.e dc=ab=21cm)
    area of shaded region=(area of square)-2(area of the semicircle)
                                       =(21×21)-2(π×21²/8)
    area of shaded region=94.63.
0
How its 108
Comment has been deleted
its 174
its not 108 because the above calculation is 2(21+66)=174
got it
  • Brainly User
2016-02-14T12:11:11+05:30
ABCD is square with sides 21cm ...and there are two semicircles...so the radius of the semicircles will be same...i.e.21/2...so the area of the two semicircles will also be same...so..area of the two semicircles DPC and APB=πr^2*2/2=πr^2=22/7*21/2*21/2=346.5cm^2..so now let us find the area of the square=21*21=441cm^2..so the area of the shaded region=441-346.5=94.5cm^2(ans)
0