We want to build a scale model of the Solar System. We settle on a scale of 1 inch = 12720 km (i.e., a 1 inch diameter marble could represent the Earth). How far would we have to place the Earth from the Sun in our scale model? How large would the radius of the Sun be in that scale model? Assume that the Sun is 700,000 km in radius. How far away would Pluto be? Please explain in detail how you arrived to your answer.