Devon checked a web site that gave daily updates on distances from Earth. He found that Pluto was 31.514 astronomical unit (AU) from Earth. One AU = 149,600,000 kilometers. How many kilometers is Pluto from Earth expressed in scientific notation? Round the mantissa to the nearest thousandth.

Answer 1

3.1514 * 10^1 * 1.496 * 10^8
= ( 3.1514 * 1.496 ) *10^9

Answer 2

Earth to Pluto ... 3.1514 x 10 AU * 1.496 x 10^8 km/AU = ? km