polyyou

C(6,3)=20

answer=20

I just finished my week 12 AoPS prealgebra 2149

I am just cuorios about your AoPS username

that is not your AoPS class

my username is rabbit317

I think it is either 149 * $\pi$ or 126 * $\pi$.

what sre you all doing in AOPS because I am doing prealgebra 2

I do (my username is rabbit317)
the link to my username is https://artofproblemsolving.com/community/user/543359

is the area of the square 1/2 * the area of the right triangle?
if it is then it would be $\sqrt{3}$

I know that the length of BC is $\frac{2\sqrt{10}}{3}$ : in decimal form is 2.10818510… but it is hard to find the cordinate