Question

Задача в прилижении.

Answer 1

S=a^2sqrt(3)/4=9sqrt(3)

a=6

R=3/sin2a

sina=3/4

cosa=sqrt(1-9/16)=sqrt(7)/4

sin2a=2*sqrt(7)*3/16=3sqrt(7)/8

R=8/sqrt(7)

h^2=4^2-64/7=16-64/7=48/7

h=4*sqrt(3/7)