Use the given information to complete parts 1 and 2. in your final answer, include all calculations.

planet earth has an approximate diameter of 1.2742 times 10^10 millimeters. the sun has a diameter of 1.391 times 10^6 kilometers.

part 1: given that, for every one kilometer there are 1,000,000 millimeters, which of the unit measurement should be used to best represent the lengths of the sun and earth’s diameters?

part 2: approximate how many times greater the sun’s diameter is than planet earth’s.