What is the perimeter of an equilateral triangle inscribed in a circle of radius 4 ?
Hi, there. I'm happy to help.
The full solution to the problem is in the attached pdf.
If the details of the 30-60-90 triangle are not familiar to you, I recommend brushing up with this post:http://magoosh.com/gmat/2012/the-gmats- ... triangles/
Let me know if there are any further questions.
Magoosh Test Prep