6-55. 6-56. 6-57. What is the double meridian distance of traverse line CA? 1. 337.60  ft 2. 258.24  ft 3. 129.12  ft 4. 79.36 ft What is the approximate area contained within the closed traverse? 1. 8,520 sq ft 2. 17,040 sq ft 3. 25,200 sq ft 4. 50,400 sq ft 6-58. What is the major difference between the DMD method of determining area and the DPD method? 1. 2. 3. 4. The DPD of the initial traverse line is twice the departure A reference parallel is used instead  of  a  reference meridian The distances are calculated using  latitude  instead  of departure Both 2 and 3 above FIGURE 6E IN  ANSWERING  QUESTION  6-58,  REFER  TO FIGURE  6E. The  coordinates  of  stations  A, B, and C of  a  closed  straight-sided traverse are given. What is the area  contained  within  the  closed traverse? 1. 75 sq ft 2. 100 sq ft 3. 125 sq ft 4. 150 sq ft Figure 6F IN ANSWERING QUESTIONS 6-59 AND 6-60, REFER TO FIGURE 6F. 6-59. Using  the  trapezoidal  rule,  the area of the figure equals 1. 2. 3. 4. 6-60. What is the initial step in finding the area of the figure by counting squares? 1. Plot it to scale on graph paper 2. Use  a  planimeter  to  determine the  area 3. Divide  it  into  100-foot  squares 4. Determine  the  bearings  of  the lines 41