ANSWERS TO QUESTIONS INVOLVING 

 CALCULATIONS 



CHAPTER I. Page 20. 



1. 1-5 mm. 2. 9-9 in. 



3. 69-5 m. ; 42-5 times. 4. 2522 hours ; 3668 times. 



5. 28-8 ft. 



CHAPTER II. Page 42. 



2. 13 sq.ft. 4. 9 pieces. 

 5. 5. 4s. Od. 6. 6s. Qd. 



1. 25,600. 8. 416,640 1. 



9. 1989 tons. 10. 3- 15 tons. 



CHAPTER III. Page 62. 



1. 106| lb. ; 5 Ib. 2. 0-75 in. 



3. 4ft. 4. 211-7 oz.; 50,803 g. 

 5. 6-58 lb. 6.- 4-11 in. 



7. 1,865 g. 9. 30-9 in. from centre. 



CHAPTER IV. Page 69. 



1. The aluminium cube. 2. 53-1 oz. 



3. 73;5c.c.; 787-4 c.c. 4. 0-94. 



5. 1,068 g. 6. 25-2 cm. x 12-6 cm. x 12-6 cm. 



7. 16,473 c.c. 8. 2,250 gals. 

 9. 8,179 c.c. ; 7,500 g. 



CHAPTER VI. Page 107. 



2. 1033-6 g. per sq. cm. ; 2,116 lb. per sq. ft. 



4. 1-024 g. per c.c. 5. 1-052. 



6. 24-7 g. 7. 2-59; 1-50. 



8. 66-8 cu. ft. 



CHAPTER VIII. Page 134. 

 1. 100ft.-lb. 



