there is a circle which circumscribes three unit circle which are tangential to each other.what is the circumference of bigger circle.?

• Just draw according to question,
  now, join the center of the smaller circles.
  radius of bigger circle= 1+ radius of circle circumscribing the equilateral triangle.
  Hence radius of bigger circle = 2/root 3 + 1
  Hence circumferance = 2* pie * R
  ie. pi(4+2sqrt3)/sqrt3
• 11 years agoHelpfull: Yes(33) No(1)
• wat r the options??
  my answer is pi(4+2sqrt3)/sqrt3
  is it the correct answer?
• 11 years agoHelpfull: Yes(14) No(2)
• radius of bigger circle= (2+ sqrt3)/sqrt3
  area of circle= 3.14* ((2+ sqrt3)/sqrt3)^2 =14.59
• 11 years agoHelpfull: Yes(2) No(0)
• @ Ahkhil after drawing the figure now radius of bigger circle=
  =radius of 1 unit circle + distance between vertex of equilateral triangle to centroid(since it is the centre of bigger circle)=1+2*sqrt(3)/3
• 11 years agoHelpfull: Yes(2) No(0)
• Answer : pi*((4*sqrt(3)+6)/3)
• 11 years agoHelpfull: Yes(1) No(1)
• ans is (2+sqrt3)/sqrt3*2 pi
• 11 years agoHelpfull: Yes(1) No(0)
• dran an equiltrl traingle by joining all 3 centre of the internal circles
  x=sqrt(2sq-1sq)
  x=1.73
  finl radius of bigger circl is 1+1.73=2.73
  finl circumfrnc =2*2.73*pie=5.46
• 11 years agoHelpfull: Yes(1) No(0)
• plzzzz elaborate it further??? how to proceed after joining the centers of the circles forming equilateral triangle??
• 11 years agoHelpfull: Yes(1) No(1)
• radius of bigger circle=(2/sqrt3)+1;area=pi((2/sqrt3)+1)^2=14.59
• 11 years agoHelpfull: Yes(0) No(2)
• i cant understand this sum ... Can anyone explain it in a detail way....?
  
• 9 years agoHelpfull: Yes(0) No(1)
• please elaborate...cannot understand the solution....
• 8 years agoHelpfull: Yes(0) No(0)