SQUARE MEASURE. 



Square measure is used in calculating areas or surfaces, 

 as of land, lumber, painting, paving, &c. 



TABLE. 



144 square inches (sq. in.) make 1 square foot, 

 9 square feet " 1 square yard, 



30 square yards 

 40 square rods 

 roods 



4 

 640 



acres 



1 square rod, 



1 rood, or qr. acre, 



1 acre, 



1 sq. mile or section, 



marked sq. ft. 

 " sq. yd. 

 " sq. rd., P. 

 " R. 

 " A. 

 " sq. m., sec. 



