358 NICHOLLS'S SEAMANSHIP AND NAUTICAL KNOWLEDGE*
25, Find by Simpson's First Rule the area of a deck 126 feet in
length, the ordinates being 4, 20, 24, 32, 28, 26 and 6 feet, and the
common interval between them 21 feet.
26, Required the area of the following waterplane 150 feet long,
common interval 25 feet, half ordinates 5,10,12,14,11, 8 and 4 feet,
27, Given the following areas of transverse sections with a common
interval of 20 feet, find by Simpson's First Rule the tons displacement
in salt water: Areas 28, 140, 176, 235, 293, 235, 176, 140, 11 feet
respectively.
f
ANSWERS.-MENSURATION
1. 7-64 cubic feet, 3-36 cubic feet. 15. 21'7 miles.
164:6-9 Ibs. 16. *41 cubic feet.
2. 375 square feet. 80 lineal 17. 44incb.es.
feet. 18. 3'4 miles.
3. 44f square yards. 19. 146'6 feet.
4. 117-2 square feet. 20. (a) 3293 feet; (&) 1048 feet.
5. 42,433 square yards. 21. 427 Ibs.
6. 81 square feet. 22. Eggs 52| tons, Butter 37J
7. 7f square feet. tons.
8. 36 square feet. 23. 31'2 tons at 36 cubic feet per
9. 1600 cubic feet. 10,000 gallons. ton 47 minutes.
10. 339f cubic feet. 24. 10,550 tons.
11. 45-1*1 gallons. 25. 2982 square feet.
12. 53| tons. 26. 3050 square feet by 1st Rule.
13. 3-42 miles. 3000 squaref eet by 2nd Rule.
14. 44 turns, 414| feefc. 27. 28,860 cubic feet. 824-6tom.