The Question:
The area of shaded region in cm2 is?
Solution:
From the figure, the shaded area is ¼ of the difference between the area of circle pr2 and largest square enclosed in it which is 2r2.
First, area of circle in cm2 = pr2 = 4p ; Area of the square which is composed of 4 equal triangles would be 4 times of area of each right angle triangle 2*2/2 i.e. 8;
Now area of shaded region = 4p-8/4 = p-2, Answer is option 2
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