1-57. The area of triangle Z is 1-58. 1-59. 1-60. approximately equal to the square root of 1. 14 2. 67 3. 781 4. 957 The area of triangle Y is equal to 1. 49.6 sin 63° 2. 49.6 cos 63° 3. 99.2 sin 39° 4. 99.2 cos 39° A distance of 1.25 statute miles is equivalent to how many (a) engineer’s chains and (b) rods? 1. (a)  53 (b) 320 2. (a)  66 (b) 400 3. (a)  76 (b) 460 4. (a) 100 (b) 400 A linear distance of 0.68 kilometers is approximately equivalent to how many  (a)  meters  and  (b)  nautical miles? 1. (a)  68 (b) 23.7 2. (a)  68 (b) 27.2 3. (a) 680 (b)  2.4 4. (a) 680 (b)  0.4 1-61. What is the area of a road 1,200 yards long and 22 feet wide? 1. 8,000 sq yd 2. 8,600 sq yd 3. 8,640 sq yd 4. 8,800 sq yd 1-62. A total of how many cubic yards of concrete are required for a retaining wall footing that measures 50 feet long, 15 feet wide,    and 5 feet high? 1. 128 2. 130 3. 136 4. 139 1-63. What tension, in pounds, must be applied to a tape tension scale it you are required to apply 8 to 10 kilogram tension to an unsupported tape? 1. 8.6 to 10.0 2. 11.6 to 15.0 3. 17.6 to 22.0 4. 20.6 to 25.0 1-64. How many seconds are there in 0.44 minute of an arc? 1. 16.4 2. 26.4 3. 36.4 4. 46.4 1-65. How many degrees are there in 1.38  minutes? 1. 0.023 2. 0.033 3. 0.038 4. 0.41 1-66. 72.73  grads,    converted  into  degrees, minutes, and seconds, equals 1.   57°17’25” 2.   59°27’17” 3.   65°27’25” 4.   68°39’17” 1-67. Approximately how many degrees are there in 4,300 roils? 1. 242 2. 245 3. 250 4. 255 1-68. Convert 95°F to degrees C. 1.   35°C 2.   34°C 3.   32°C 4.   30°C 1-69. It  was  determined  that  435  linear feet of 2-inch by 4-inch lumber are required  for  formwork. How many board feet of lumber should be ordered  for  this  job? 1. 278 2. 280 3. 286 4. 290 7