530 TABLE XXXIX. SUPERFICIAL MEASURE, 



Or, jy Table XL. 



The next lower number of yards to 130 

 is . . . . . 103 = 3 roods. 



And the remainder is . . 22 yards, as above. 



2. How many roods of mason-work are there in a stone wall 

 6 feet 6 inches high, and 826 feet long? 



The readiest way to calculate this is to consider the wall twice 

 the height, or 13 feet, and half the length, or 413 feet. 



Then, opposite 100 feet in length, Sq. Yds. Ft. 



under 13 feet, stands . . . 144= 4 



Which multiplied by ... 4 



Gives the content of 400 feet = 577 7 



And opposite 13 feet stands . . 18 7" Ro. fd.3. rt. 



To reduce this to roods, divide by 36 )596 5( 16 20 5 



36 



236 

 216 



20 

 Or, by Table XL. Yds> Ft 



The next iower number of yards to 596 5 

 is . . . * . . 576 s= 16 roods. 



Leaving a remainder of . 20 5 



Making the answer 16 roods, 20 yards, 5 feet, as above. 



