MISCELLANEOUS TABLES AND INFORMATION 295 
Right-Angled Triangle. The 
square of the hypothenuse of a 
right-angled triangle equals the 
sum of the squares on the other 
two sides, or, in the figure, 
AB 2 + AC 2 = BC 2 , 
or O + N = M. 
By means of this rule, when any 
two sides of a right-angled triangle 
are given, the third can be 
found. 
Volume of Cylinder. (Figure E.) 
of the base by the altitude. 
Volume of Cone. (Figure F.) Multiply the area of the 
base by one-third of the height. 
0 
A 
N 
Figure D 
Multiply the area 
Volume of Prism whether Right or Oblique. (Figure 
G.) Multiply area of base by the vertical height. 
Volume of Pyramid. (Figure H.) Multiply base by 
one-third of the height. 
To Measure the Contents of a Box or Solid with Sides 
at Right Angles to One Another. Multiply length by 
breadth by height. If the dimensions are in feet the result 
will be the contents in cubic feet. 
