Estimate the mass of the sun, assuning the orbit of Earth round the sun to be a circule.The disatnce

Estimate the mass of the sun, assuning the orbit of Earth round the sun to be a circule. The disatnce between the sun and the Earth is `1.49 xx 10^(11) m`, and `G = 6.67 xx 10^(-11) Nm^(2) kg^(-2)`.