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Math Help - Help with unit conversions

  1. #1
    Member
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    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}<br />

    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.
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  2. #2
    No one in Particular VonNemo19's Avatar
    Joined
    Apr 2009
    From
    Detroit, MI
    Posts
    1,823
    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.
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