40 Numerical InflruBions 



Again, in the Parallelogram B, let the Side 

 A B, or C D, be 20 Chains 50 Links ^ and 

 the Side Ac, or b D, 10 Chains o Links. 

 Multiply a b Qo Chains 50 Links, by a c 

 10 Chains o Links, and it makes 20500CO 5 

 which is 20 Acres, 50000 ^ but here being 

 a Decimal Fraftion, by the cutting off the 

 five Figures, we are (which there was no 

 Occafionofin the laft Dimenfion) to multi- 

 ply it by 4, and cut off five Figures, and 

 the Figures above five are Roods. Again, to 

 find the Perches, multiply by 40, and the 

 Figures toward the left Hand, above five, 

 are Perches. 



See the Operation. 



, ,J?iQr<;hes '-^ o|ooooo 



So that the full Sura is 20 Acres, 2 Roods, 

 o Perches, 



Hqw 



