Urgent! For those who took jan 2013 sat

Test Preparation SAT Preparation
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<p>Hi :3</p>

<p>There was a math question on the Jan 2013 SAT regarding the answer being 16pi.</p>

<p>Frequent roamers of this forum would most likely know what i'm talking about, but does anyone know how to approach this answer? I got extremely lucky with a guesstimate.</p>

<p>To ring a bell; it involved 2 circles with their radii given, and a "diamond" in between the two circles and you had to find the total arc length of the two circles what isn't covered up by the diamond. </p>

<p>PLS I NEED TO KNOW HOW TO DO THIS LOL</p>

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<p>can anyone tell me the difference between the QAS and the SAS. I ordered the SAS but i still didnt get it</p>