36 PRACTICAL MEASUREMENTS 



EXERCISE 



1. How many bushels of coal are there in a wagon bed 

 9 ft. long, 3 ft. wide, and 15 in. deep ? 



2. How many tons of coal will a coal shed 12 ft. long, 

 8 ft. wide, and 7 ft. high hold ? 



3. Measure the thickness of a vein of coal in your neigh- 

 borhood and estimate the number of tons under an acre of 

 land. What is it worth at 10$ per ton ? 



4. How many tons of coal can be placed in a car 36 ft 

 long, 8 ft. wide, and 5 ft. deep ? 



LIQUID MEASURE 



40. The liquid gallon contains 231 cu. in. and the barrel 

 3l gal. A cubic foot contains 1728 cu. in. For practical 

 purposes count 7 gal. to every cubic foot of water. 



EXERCISE 



1. Make a box whose inside measurements are 11 in. by 

 7 in. by 3 in. Fill the box level full of sand, then pour the 

 sand into a bucket and mark its depth. This may be used 

 as a gallon measure. 



2. Using your marked bucket as a measure, find the 

 capacity of several different vessels. 



3. Saw a 1-inch cube from a board 1 in. thick. 



4. Saw a square foot from a board 1 in. thick. What 

 must be the width of the board ? How many 1-inch cubes 

 does it contain ? 



5. Make a box whose inside measurements are 12 in. by 

 12 in. by 12 in. How many 1-inch cubes does it contain ? 



