Two circles are there one with arc area 60digree equal to 45digree of another circle find the area of circle1:circle2 ratio

• area for first circle=(3.14*r^2)/6
  area of second circke=(3.14*R^2)/8
  therefore, ratio=3:4
  since, area of arc= 360/arc degree.
• 8 years agoHelpfull: Yes(3) No(0)
• Ans: 3:4
  360/60=6
  360/45=8
  6/8=3/4
  
• 8 years agoHelpfull: Yes(1) No(0)
• 2rsinA/2 IS THE LENGTH OF ARC
  so, 2r1sin60/2=2r2sin45/2 (sin 30=1/2 and sin45/2=sqrt(2-sqrt(2))/2)=0.383(approx))
  r1(0.5)=r2(0.383)
  r1/r2=(0.383/0.5)
  
  ratio of area r1^2/r2^2=1.414/1=1:1
  
  but i think instead of 45 degrees they should mention 90
• 8 years agoHelpfull: Yes(0) No(0)
• ans : 4:3
  A1/A2=(3.14*r^2/6)/(3.14*R^2)=4:3
  
• 8 years agoHelpfull: Yes(0) No(0)
• lcm = 180
  180/60:180/45
  3:4
• 7 years agoHelpfull: Yes(0) No(0)