### From the official SAT site, here’s the Question of the Day for 9/25/14:

### http://sat.collegeboard.org/practice/sat-question-of-the-day?questionId=20140925&oq=1

### The answer is C. Choose it (on the site, using the link above), and you will see the explanation involving a 30-60-90 triangle. This is definitely the way to go, if you ‘remember how’.

### The problem is, so many students will look at this question and say ‘I don’t remember how to do this’ and then skip it. DON’T SKIP IT!!!!

### Just ‘measure’ it! OK, it’s not really measuring. But consider this: The diagram does NOT say ‘not drawn to scale’. Therefore, we can assume it IS reasonably drawn to scale. Look at the diagram. Triangle ABO *does* look equilateral, O *does* look like the center of the circle, and the circle *does* look like a circle. So, take the given measurement – that the sides of triangle ABO are 6 – and run with it! Look at segment AB below. It is 6 units long. Measure it with your fingers and then use the same distance to guess at the length of segment BC. Below, I’ve shown that 6 units, placed twice end-to-end along segment BC, is just a little longer than segment BC. So, segment BC is shorter than 12. If you do it carefully, you’d probably guess segment BC is about 10-11 units long.

### Look at the choices. Calculate decimal approximations for A, B, and C by typing the answers into your calculator. Which one is closest to our estimate? C! And it’s the right answer!