31. ABC is an isoscles right angled triangle with ZABC 90.Asemi-circle – InterviewSolution

1.	31. ABC is an isoscles right angled triangle with ZABC 90.Asemi-circle is drawn with AC as the diameter. IfAB = BC = 7 cm; findthe area ofthe shaded region (Take π=22)[ICSE 2012]
Answer» radius of the semicircles will be 7/2=3.5cmarea =πr^2/2as there are 2 semicircleshence2πr^2/2=22/73.53.5=38.5cm^2

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