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I hope this will help you bhawnagupta
Radius of circle, by Pythagoras theorem
As a square is inscribed in it with side of 20cm
Then by Pythagoras theorem
20²+20²=diagonal²
400+400=diagonal²
√800=diagonal
20√2 =diagonal
As can see in the diagram that the diagonal of square is the radius of circle
Then radius of circle =20√2
Area of circle =πr²
Area of circle 3.14*20√2
Area of circle =2512cm²
In this figure 1/4 of circle is given then the area of this figure =2512/4 =628cm²
Area of square =20*20=400cm²
Area of shaded region =area of 1/4 circle -area of square
Area of shaded region =628-400=228cm²
228cm² is your answer
Radius of circle, by Pythagoras theorem
As a square is inscribed in it with side of 20cm
Then by Pythagoras theorem
20²+20²=diagonal²
400+400=diagonal²
√800=diagonal
20√2 =diagonal
As can see in the diagram that the diagonal of square is the radius of circle
Then radius of circle =20√2
Area of circle =πr²
Area of circle 3.14*20√2
Area of circle =2512cm²
In this figure 1/4 of circle is given then the area of this figure =2512/4 =628cm²
Area of square =20*20=400cm²
Area of shaded region =area of 1/4 circle -area of square
Area of shaded region =628-400=228cm²
228cm² is your answer
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