13 



METHOD OF 



Once more If one side of a piece of 

 land be longer than the other, take the 

 length and breadth exactly in the mid- 

 dle, and you will be able to find the con- 

 tent precisely as in the last example. 

 Now, suppose the length from A to B 

 318 yards, the breadth from C to D 129 

 yards f 



A. R. P. 

 C 100 yards wide. 6 2 11 



318yardslong3 20 ....do 1 1 10 



( 9 ....do 2 15 



Content, 8 1 36 



The content of the triangle 

 is found by measuring the 

 longest side, and also the 

 nearest or perpendicular dis- 

 tance from the said side to 

 the corner opposite to the 

 said side ; and in finding the 

 content, observe to take only 

 one half the perpendicular fl, 

 for a mean width. Now, sup- 

 pose the longest side, B C, be 417 yards, and the per- 

 pendicular, A D, be 326 yards, the half of which is 163 

 yards for a mean width ; then 



A. R. P. 



C 100 yards wide, is 8 2 19 



417 yards long and { 60 ... .do 5 27 



I 3 ....do. 1 1 



Content of triangle, 14 7 



And the content of any field, having four straight side& 

 may be found by the same rule : measure the distance 



