Answer:
S
=2
plus in the 9 and theres your answer
Step-by-step explanation:
ok lets see here after some research
So a hexagon can be split into 6 equilateral triangles right? well,
each base of each triangle is equal to r * 
because of this, the area of each triangle equals
(
) * (r *
) * r = 
because there are 6 triangles, it is 6 times greater.
S=
= 2
