 | 1843 - 142 σελίδες
...togsther, and extract the square root of the product for the area of the triangle. EXAMPLE. Required the area of a triangle, whose sides are 13, 14, and 15 feet. SOLUTION. 13+144-15=42-v-2=21— 13=8, 1st rem. ; 21—14=7, 2d ram. ; 21—15=6, 3d rem. ; 21X8=168X7=1176X6=705... | |
 | Hugo Reid - 1872 - 148 σελίδες
...triangle, the base being 20 feet, and each of the equal sides 15 feet? Ans.— 11 1-803 sq. feet. 6. Find the area of a triangle, whose sides are 13, 14, and 15 feet. Ans. — 84 sq. feet. 7. Find the area of a triangle, whose sides are 13, 20, and 21 feet. Ans.... | |
 | Daniel W. Fish - 1874 - 152 σελίδες
...Ans. 3 : 45387 :: Ia : xz ; z=123 rods wide, Ans. 6. 55.1 : 300 :: 1.5г : z2; ж=3.5 in., Ans. i . The area of a triangle whose sides are 13, 14 and 15 ft., is 84 sq. ft. 84 : 24276 : : 13a : з? ; ж=221 feet. \ 84 : 24276 : : 142 : я? ; ж=238 feet. t Ans. 84 ±fc76 : :... | |
 | Daniel W. Fish - 1874 - 156 σελίδες
...Ans. 3 : 45387 :: I2 : ж2 ; ж=123 rods wide, Ans. 6. 55.1 : 300 :: 1.52 : z*; я=3.5 in., Ans. i. The area of a triangle whose sides are 13, 14 and 15 ft., is 84 sq. ft. 84 : 24276 : : 132 : я? ; ж=221 feet. \ 84 : 24276 :: 142 : y? ; ж=238 feet. V Ans. 84 *5s76 : : 15s... | |
 | Joseph Ray - 1877 - 350 σελίδες
...which the base is 12 ft. 6 in. and the altitude 16 ft. 9 in.? 11 sq. yd. 5 sq. ft. 99 sq. in. 4. Find the area of a triangle whose sides are 13, 14, and 15 ft. 84 sq. ft. 5. The sides of a triangle are 30, 40, and 50 ft. : what is the area? 66 sq. yd. 6 sq. ft.... | |
 | Thomas Liddell Ainsley - 1880 - 866 σελίδες
...EXAMPLES FOR PRACTICE. 1. What is the area of a triangle whose sides are 50, 40, and 30 P 2. Required the area of a triangle whose sides are 13, 14, and 15 feet respectively. 217. To find the area of a trapezoid, which is a four-sided figure, having only... | |
 | Benjamin Franklin Finkel - 1888 - 518 σελίδες
...of one is 24 feet, and one of the equal sides of the other is 29 feet. The area of both is 10 times the area of a triangle whose sides are 13, 14, and 15 feet. Find the perimeters and altitudes. Ans. Perimeters, 98 feet; altitudes 35 and 21 feet. 47. A... | |
 | Horatio Nelson Robinson - 1896 - 170 σελίδες
...f. l 3 : 45387 : : I2 : x1 ; x = 123 rd. wide, / ' 6. 55.1 : 300 : : 1.52 : x2 ; x = 3.5 in., 4nв. 7. The area of a triangle whose sides are 13, 14, and 15 ft. is 84 sq. ft. 84 : 24276 : : 132 : x2 ; x = 221 ft., \ 84 : 24276 : : 142 : x2 ; x = 238 ft., [ Лns. 84 : 24276 : :... | |
 | Webster Wells - 1898 - 250 σελίδες
....-. area ABC= \a x ^1Z> (?) = Vs(s — a) (s — &) (s — c). 325. Sch. Let it be required to find the area of a triangle whose sides are 13, 14, and 15. Let a = 13, 6 = 14, and c = 15; then s = £(13 + 14 + 15) = 21. Whence, s — a = 8, .s — b = 7,... | |
 | Webster Wells - 1899 - 424 σελίδες
...a .-. area ABC= \ax AD (?) = Vs(s — a) (s — b) (s — c). 325. Sch. Let it be required to find the area of a triangle whose sides are 13, 14, and 15. Let a = 13, 6 = 14, and c = 15 ; then s = >-(13 + 14 + 15) = 21. Whence, s — a = 8, s — 6 = 7,... | |
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Let it be required to find the area of a triangle whose sides are 13, 14, and 15. 
