# Math Help - Help with unit conversions

1. ## Help with unit conversions

I am working through another portion of my math book and the question states.

Mars Orbits 1.5 AU (astronomical units) from the sun what is that distance in CM?

AU= $1.5x10^{11}$

$1.5x10^{11}*1.5$= $2.25e^{11}$
1 meter = 39.36 inches
1 inch = 2.54 centimeters
1 cm = .394 inches

I attempted it this way but the answer was incorrect.
$2.25e^{11}x\frac{1 meter}{39.36 inches} * \frac{1 Inch}{2.54 centimeters}
$

Now where do I go from here? You do not have to solve for me but if someone would please show me the steps it would be much appreciated.

2. There are 149597870691 meters in one AU. There are 100 cm in a meter.

So, all you gotta do is multiply 149597870691 by 1.5, then by 100. If you'd like to covert to Scientific after or before is your choice.