What is the length of the radius of the circumcircle of the equilateral triangle, the length of whose side is 6 sqrt(3) cm ?

• I one sees in the fig. a circle is outside a equ. triangle
  
  taking one vertex SAY angle A = 60;
  Angle at center of the circle with two left out vertex will be 90-60/2 = 120
  Now as the lines of radius of circle has bisected the triangle angle OBC = angle OCB = 30
  side = 6 root 3
  cos 30 = 6 root 3 / H (H == radius of circle)
  H = 6
  
  Ans : 6 cm
• 7 years agoHelpfull: Yes(0) No(0)