anyone good at Precalculus and areas??

Question

anonymous · Answer

attachment

anonymous · Answer

i found this http://www.nexuslearning.net/books/ML-Geometry/Chapter11/ML%20Geometry%2011-5%20Areas%20of%20Circles%20and%20Sectors.pdf

turingtest · Answer

well you know the area of the circle
so you just need to subtract the area of the hexagon, which is made up of 6 isosceles triangles

anonymous · Answer

it explains on the third page kinda but i dont get where they are getting some the numbers from like 5/2 and sqroot 3   and 6

turingtest · Answer

I would solve the problem slightly differently, and I'm a bit tired, so I don't feel like reconciling my approach with that of the link
it comes down to "what is the area of each triangle that make of the hexagon?"
there are many ways to find that

anonymous · Answer

do you cut it into 6 triangles or 12?

turingtest · Answer

six iscosceles triangles make up a hexagon|dw:1334629920123:dw|from this you should be able to find the area of the triangle 
subtract the area of six of them from that of the circle and that is the remaining shaded area