To move a Safe, two cylindrical steel bars 7 inches in diameter are used as rollers.How far will the safe have moved forward when the rollers have made one revolution?

• 
  diameter = 7cms
  radius = 7/2 cms
  circumference = 2*22/7*r
  = 2*22/7*7/2
  = 22 cms is the distance moved.
  
• 11 years agoHelpfull: Yes(6) No(1)