Elements of Arithmetic Volume 2 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1855 Excerpt: ...98ft. broad, and 65ft. high. If an exact model were made, 3ft. in length, what would be the breadth and height? 96. The Pharos, or watch-tower of Alexandria, which was called one of the seven wonders of the world, was 400ft. high. At what distance from its base would it have appeared of the same height as a 6ft. pole placed 27ft. from the eye? Ans. 1800/C. ' 97. The length of St. Peter's church is 840ft.J What should be the length of an exact model that is 9 inches high? What should be the breadth of such a model, the breadth of the church being 725ft.?J See Ex. 87. 98. What should be the base circumference of the model referred to in the preceding example, the circumference of the church being 2465ft.?J 99. By an account taken under Demetrius Phalereus, Boon after the time of Alexander, the inhabitants of Athens amounted to 440000, of whom much the greater part wcro slaves. If there were 7 slaves to every 4 free citizens, what was the entire number of slaves? Ans. 280000. Encyclopedia Americana. f London Philosophical Transactions, vol. 51. 1 Pinnock. 2 Willard. 100. The Manchester and Liverpool Rail way is 31 miles long, and cost 820000. What would it cost to build a road 100 miles long, at the same rate? Ans. 2645161 5s. Wd. 101. The annual tribute levied on the satrapy of India, by the Persian emperors, was 4680 talents of silver. To what was this sum equivalent, estimating the value of 13 silver talents at 826280?f 102. The annual tribute paid by the satrapy of Egypt, including Gyrene and Barca, was 1400 talents of silver, one-half of which was paid in grain. Required its value in Federal Money. 103. The annual tribute of'the satrapy of Babylonia and Assyria, including Syria, was 1000 talents of silver. Find its value in our currency...