A circular region touching all the four sides of a square of side $2 c m$ is painted. Find the area of the region which is not painted

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Solution

The side of the square is $= 2 c m$

The area of the square is $= 2 \times 2 = 4 c m^{2}$

The diameter of the circle is $= 2 c m$

The radius is $= 1 m$

The area of a circle is $π r^{2} = π$

The area which is not painted is $= 4 - π = 0.86 c m^{2}$

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A circular region touching all the four sides of a square of side 2 cm is painted. Find the area of the region which is not painted

The side of the square is =2cmThe area of the square is =2×2=4cm2The diameter of the circle is =2cmThe radius is =1mThe area of a circle is πr2=πThe area which is not painted is =4−π=0.86cm2

A circular region touching all the four sides of a square of side $2 c m$ is painted. Find the area of the region which is not painted

The side of the square is $= 2 c m$

The area of the square is $= 2 \times 2 = 4 c m^{2}$

The diameter of the circle is $= 2 c m$

The radius is $= 1 m$

The area of a circle is $π r^{2} = π$

The area which is not painted is $= 4 - π = 0.86 c m^{2}$