find the difference of areas of sector of angle 120 and its corresponding major circle of radius 21cm
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Difference in areas= (22/7×21×21 -110/360* 22/7×21×21) cm²
=(1-1/3) (66×21 )cm²
=66×7×2 cm²
=924cm²
=(1-1/3) (66×21 )cm²
=66×7×2 cm²
=924cm²
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