Extracted text: 1. On a map distance between the end points of a line AB (assumed to be of uniform slope) is 10.5 cm. If the elevation of points A and B are 1810.3 and 1831.6m respectively. Determined analytically the following: a) contour line with an elevation of 1815meters will cross the line point A. b) Contour line with an elevation 1820 meters will cross line AB at c) Contour line with an elevation 1825 meters will cross line AB at d) Contour line with an elevation 1830 meters will cross line AB at cm from point B. point A. point B. 2. On a map at a scale of 1cm = 50m and with a contour interval of 1.5m, the distance scaled on the map between two adjacent contours is 13.7mm. The slope of the ground in percent is_ 3. The accompanying tabulation gives elevations of points over the area of a 30m by 40m city lot. The elevations were obtained by the Checkboard Method using 10-m squares. Point A-1 is located at the northwest corner of the lot and point E-4 at the southeast corner. All elevation are in meters. 3 883.5 893.7 POINT 2 882.5 A 878.8 883.6 B 883.2 885.9 887.2 882.8 888.6 891.8 889.3 D. 882.5 890.4 888.5 892.6 889.5 883.2 892.8 893.5 A) Plot the contours using a horizontal scale of 6cm = 10m and a contour interval of 1m. B) Use Long size Bond paper C) All corner designations and corresponding elevations must be indicated, including vertical and horizontal lines. D) Show the direction of north and indicate the scale used. E) Indicate the elevations of the following index contours: 880, 885, 890, 895. Thichness of the index countours must be drawn about twice the thickness of intermediate contours. F) Write your solution in a separate Long size Bond Paper.