The result of your conversion between yard and square gigameter appears here
To convert between Yard and Square Gigameter you have to do the following:
First divide ((0.003785411784/231)*1728)*27 / 1.0E+18 = 0.
Then multiply the amount of Yard you want to convert to Square Gigameter, use the chart below to guide you.
Symbol: yd
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Symbol: gm2
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