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Radiation Pressure in the Sun's Core vs Gas Pressure

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The gas pressure at the center of the sun is 4 x 10^11 atm and the temperature is 2 x 10^7 K. Estimate the radiation pressure and show that it is very small compared to the gas pressure (see attachment).

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Radiation pressure in the sun's core has been calculated and compared with the gas pressure in the solution (see attachment).

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Radiation pressure is given by the formula P = (4σ/3c) T^4
σ = 5.67 x 10-8 W m-2 K-4 ...

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