CHAPTER IV. 

 MEASUREMENT OF VOLUME. 



9. UNITS OF VOLUME. 



i. Cubic inch and cubic foot. Procure a box or a block one cubic foot 

 in size. Divide the top and the other faces of the cube into square inches 

 (Fig. 14). Notice that the area of 

 each face of the cubic foot is one 

 square foot. Count the number of 

 square inches marked on one face. 

 Notice that 144 cubic inches could 

 be cut out of a slab of the cube one 

 inch thick. How many slabs having 

 a thickness of one inch could be cut 

 from one cubic foot, and how many 

 cubic inches are there altogether in 

 such a cube ? 



ii. Cubic centimetre and cubic 

 decimetre. Using a block one cubic 

 decimetre in size, divide the top and 



faces into square centimetres. How FlG 14 _ To show the relation betw een 

 many square centimetres are there 1 cubic inch and 1 cubic foot. 



in each face ? How many cubic 



centimetres are there in a slab one centimetre thick ? How many cubic 

 centimetres go to make one cubic decimetre ? (Fig. 15.) 



FIG. 15. To show the relation between 1 cubic centimetre and 1 cubic decimetre. 

 J.O.S. 17 B 



