At its closest point, Mercury is approximately 46 million kilometers from the sun. What is this distance in AU?

Explanation :Astronomical unit is the unit to find the average distance between the earth and the sun.[tex]1\ AU=1.496\times 10^8\ Km[/tex]So, [tex]1\ Km=\dfrac{1}{1.496\times 10^8}\ AU[/tex]46 million kilometers means, [tex]46\times 10^6\ Km[/tex][tex]46\times 10^6\ Km=\dfrac{46\times 10^6}{1.496\times 10^8}[/tex][tex]46\ million\ Km=0.3074\ AU[/tex]Hence, this is the required solution.      

1 astronomical unit 1 AU = 1.4960 * 10^11 metersit is the average distance between earth and sun mercury to sun distance is = 46,000,000 * 1000 meters                = 4.6 * 10^9 meters = 4.6 * 10^9 / 1.4960 * 10^11  AU               =  3.0.74 / 100  = 0.0374 AU