178 FARM ARITHMETIC. 



Process : 



15 feet X 9 feet = 135 square feet 

 135 -r- 9 = 45 square yards. 

 45 -f- 5 = 9 bundles. 



630. How many bundles of laths will be required for 

 the sides and ceiling of a room 20 feet long, 15 feet wide, 

 and 9 feet high, allowing for two windows 3' 6" x 5', one 

 door 3' 6" x7'? 



631. A certain house contains eight rooms, four of 

 which are 20,' x 15' x 9', and four 15'xl5'x9'. How 

 many bundles of laths will be required for .all walls and 

 ceilings, allowing 190 square yards for doors, windows, 

 baseboards, and fireplaces? 



Plastering. The unit for measuring plastering is 

 the square yard. 



The following materials are required for 100 square 

 yards of plastering, two coats : 



y/2 barrels of lime, 



lj/2 bushels of hair or fiber, 



1*4 cubic yards of good sand. 



632. How many barrels of lime are needed for plas- 

 tering the walls and ceiling of a room 17' 4" x 15' 8" x 

 10'? 



633. How many bushels of hair or fiber ? 



634. How many cubic yards of sand? 



635. A farm house just built has the following rooms, 

 walls and ceilings of which are to be plastered : On the 

 first floor : hall, 8' x 35' ; dining room, 15' x 20' ; kitchen, 

 15' x 15' and a living room, 20' x 35' ; on the second 

 floor are the same number of rooms, including 

 the hall and bathroom, and of the same size as 

 on first floor. The height from the floor to the ceil- 

 ing is 9' for the first floor, and 8'' for the second floor. 

 How many square yards of surface for the entire house? 



