If the area of two circles are in the ratio 169 : 196 then the ratio of their radii is
a) 10 : 11 b) 11 : 12 c) 12 : 13 d) 13 : 14 e) None of the above

• If r and R are raii if two circles, then
  pi*r^2/pi*R^2 = 169/196
  
  r^2/R^2 = 169/196 = (13/14)^2
  hence
  r/R = 13/14 ... option D
• 12 years agoHelpfull: Yes(14) No(0)
• The answer is 13:14
  The ratio of the area of two circle=169:196
  The ratio of the radii of two circle= 13/cube root of pie :14/cube root of pie
  Hence the ratio of radii is 13:14
• 12 years agoHelpfull: Yes(0) No(3)
• (Area of circle 1)/(Area of circle 2) = (pi* r1*r1)/(pi*r2*r2)
  
  169/196 = (r1^2)/(r2^2)
  
  
  r1/r2 = 13/14
  
  
  Hence the ratio is 13:14
• 7 years agoHelpfull: Yes(0) No(0)
• pi*r^2/pi*r^2=169/196
  13^2/14^2=13/14=13:14
• 7 years agoHelpfull: Yes(0) No(0)
• 13:14.Area of a circle is 22/7*r*r
• 6 years agoHelpfull: Yes(0) No(0)
• area = pie.r^2
• 9 Months agoHelpfull: Yes(0) No(0)