A circular dartboard of radius 1 foot is at a distance of 20 feet from you. You throw a dart at it and it hits the dartboard at some point Q in the circle. What is the probability that Q is closer to the center of the circle than the periphery?
0.20
1
0.5
0.25

• (area of inner circle of radius 1/2):(area of entire circle of radius 1)
  
  The P's cancel out:
  
  Doing the squares:
  
  We ignore dividing by one, so the answer is:
  1/4
  =0.25
• 13 years agoHelpfull: Yes(2) No(2)