1132 APPENDICES AND TABLES 



APPENDIX F 



EXAMPLES USEFUL TO THE MICBOSCOPI8T 



Square inch . . . = 10-08061 square millimetres. 



A . - 6-45159 



A . . . = 4-48027 



>, rfo > ...'- -06452 



= 64515-9 

 = 645-159 



Square centimetre ..... = 15-50006 square ^ inch. 



miUimetre ..... = 15-50006 T ^ 



100 /i ....... =15-50006 T^ 



lO^i ....... = -15500 



- /* ..... . . . = -00155 



Multiples of the above may be found by multiplying the values given 

 by the square of the multiplier. 



Thus, square & inch = A x 4 ; the square of 4 = 4 x 4 = 16, and 6-45159 

 x 16 = 103-2254 square millimetres, the answer required. 



Cubic inch . . . . = 32-00589 cubic millimetres. 

 A .---...'- 16-38702 

 A . . . . . = 9-48323 

 rfo , ..... = '01639 



nAnr, .... =16387-02 11 



Cubic centknetre ..... = 61-0239 cubic ^ inch. 



miUimetre ..... = 61-0239 T ^ 



100 p. ...... = 61-0239 T ^ 7 



10 /* ....... = -061023 



t, -p ........ = '000061023 



Multiples of the above may be found by multiplying the values given 

 by the cube of the multiplier. 



Thus, 2 cubic millimetres : 2 cubed =2x2x2 = 8, and 61-0239 x 8 

 = 488-1912 cubic jfa inch, the answer required. 



Areas of Circles 



$ inch diameter = 1-22718 sq. A inch = 7-91726 sq. millimetres 

 A = -78539816 = 5-06706 



A ,, '545415 = 3-51879 



T** >i = '78540 jfa = -05067 



= 50670-6 p. 



= '78540 ,, = 506-7 



1 millimetre diam. = -78539816 sq. mm. = 12-17372 sq. T fo inch. 



100 /x .... = 7854-0 M - 12-17372 



. . . . = 78-54 = -12174 



= -7854 = -0012174 



