Blue area is;
Area sector with radius 3√(2) unit and angle 30° - area isosceles triangle with two equal length 3√(2) unit and angle 30°.
= (30πx(3√(2))²÷360) - (0.5x(3√(2))²sin30)
= (18π)/12 - (9/2)
= (3π)/2 - (9/2)
= ½(3(π-3) square unit.
= 0.21238898039 square unit.
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