TO CONVERT SCOTCH ACRES INTO IMPERIAL. 47 



To find the value of an Imperial acre, compared with 

 that of a Scotch, using the Scotch chain of 74f feet 

 long : - 



RULE. As the square of the Scotch chain is to the 

 square of the Imperial chain, so is the value of the Scotch 

 acre to the value of the Imperial acre. Or, 



As 553536 is to 435600, so is the value of a Scotch acre 

 to that of an Imperial. 



Ex. If an undertaker engages to reap a field at 10s. 

 per Scotch acre, how much is that per Imperial acre ? 



*. s. d. 

 553536 : 435600 : : 10 : 7 10 fc Answer. 



