Find the Average Density of a White Dwarf Star If

Multiple Choice

Find the average density of a white dwarf star if it has a mass equal to that of the sun (2.0 *1030 kg) and a radius equal to that of the Earth (6.4 * 106 m) .

A) 9.0 *106 kg/m3
B) 1.8 * 107 kg/m3
C) 1.8 *109 kg/m3
D) 3.6 * 1010 kg/m3
E) 9.0 * 107 kg/m3