Problem 7

 

Two pulleys are connected by a belt that crosses over, as shown.  The diameter of the larger pulley is 18 cm and the diameter of the smaller pulley is 12 cm.  The centers of the two pulleys are 30 cm apart.  How long is the belt?

[Problem submitted by Juergen Pahl, LACC Professor of Mathematics.]

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Solution: