Question

A red giant star has a temperature of 3,000 K and a luminosity 105 solar luminosities. How do you calculate the radius of the red giant in terms of the radius of the sun?

Answer 1

A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar ... Red -giant-branch stars have luminosities up to nearly three thousand times that of the Sun ( L