 | Eugene L. Dubbs - Arithmetic - 1901 - 462 pages
...floor is 25 ft. long, and its two ends are respectively 16 ft. and 20 ft. wide. What is its area ? 2. Find the area of a field in the form of a trapezoid, the parallel sides being 72 rd. and 56 rd. in length, and 75 rd. apart. 4. -A lot is bounded by four... | |
 | Elmer Adelbert Lyman - Arithmetic - 1905 - 268 pages
...the bases are 10 ft. and 18 ft. and the equal sides are 8 ft. 4. What is the area in hectares, etc., of a field in the form of a trapezoid of which the bases are 475m and 580m and the altitude is 1270m ? 5. Show that the altitude of an equilateral triangle,... | |
 | George E. Mercer - Arithmetic - 1909 - 312 pages
...Parallel sides 125 m and 140 m, altitude 68 m. 5. Parallel sides 232 m and 188 m, altitude 155 m. 6. Find the area of a field in the form of a trapezoid whose altitude is 120 m and whose parallel sides are 130 m and 180 m. 7. At F145 a hektar, what is... | |
 | DeForest A. Preston, Edward Lawrence Stevens - Arithmetic - 1910 - 380 pages
...area of a parallelogram whose base is 64 yd. and altitude 50 yd. 64 sq. yd. x 50 = sq. yd. Ans. 3. Find the area of a field in the form of a trapezoid whose parallel sides are 60 yd. and 80 yd. and the perpendicular distance between them 45 yd. Ans.... | |
 | John Henry Walsh, Henry Suzzallo - Arithmetic - 1914 - 524 pages
...inches deep, to sustain a load of 1350 pounds ; that is, solve the equation : 2 x 3 x 36 x O 12 = 1350. 4. Find the area of a field in the form of a trapezoid whose parallel sides measure 30 and 50 rods, respectively, and having a perpendicular distance between... | |
 | George E. Mercer, Mabel Bonsall - Arithmetic - 1914 - 324 pages
...Parallel sides 125 m and 140 m, altitude 68 m. 5. Parallel sides 232 m and 188 m, altitude 155 m. 6. Find the area of a field in the form of a trapezoid whose altitude is 120 m and whose parallel sides are 130 m and 180 m. 7. At P 145 a hektar, what is... | |
 | John Henry Walsh, Henry Suzzallo - Arithmetic - 1915 - 216 pages
...inches deep, to sustain a load of 1350 pounds ; that is, solve the equation : 2 x 3 x 36 x O 12 = 1350. 4. Find the area of a field in the form of a trapezoid whose parallel sides measure 30 and 50 rods, respectively, and having a perpendicular distance between... | |
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Find the area of a field in the form of a trapezoid whose altitude is 120 m and whose parallel sides are 130 m and 180 m. 
