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" A ladder 40 feet long may be so placed that it will reach a window 33 feet high on one side of the street, and by turning it over without moving its foot it will reach a window 21 feet high on the other side. Find the breadth of the street. "
Elements of Trigonometry, Plane and Spherical - Pągina 108
per Lefébure de Fourcy (M., Louis Etienne) - 1868 - 288 pągines
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United States Calculator: Or, Arithmetic Simplified

John M'Nevin - 1841 - 300 pągines
...from a point one mile above the level of the sea. 2. Suppose a ladder 40 feet long be so planted as to reach a window 33 feet from the ground on one side of the street, and without moving it at the foot, will reach a window on the other side 21 feet high, what is the breadth...
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Plane and Spherical Trigonometry ...

Henry W. Jeans - 1842 - 138 pągines
...feet Ans. 75. (3) (fig. 19). A ladder 36 feet long, may be so placed that it shall reach a window 30.7 feet from the ground on one side of the street, and by only turning it over, without moving the foot out of its place, it will reach another window 18.9 feet...
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A Practical System of Mensuration of Superficies and Solids ...

J. M. Scribner - 1844 - 130 pągines
...is the length of the base 1 Ans. 28 yds. Ex. 4. A ladder 50 feet in length will reach to a window 30 feet from the ground on one side of the street, and by turning it over to the other side, it will reach a window 40 feet from the ground ; required the breadth of the street....
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A New Practical and Theoretical Arithmetic: In which in Addition to the ...

Horatio Nelson Robinson - 1845 - 310 pągines
...14,142+yards. Sum, 50; diff. 4; */50X4=>/200=14,142 + Ans. 8. Suppose a ladder 40 feet long be so planted as to reach a window 33 feet from the ground, on one side of the street, and without moving it at the foot, will reach a window on the other side 21 feet high, what is the breadth...
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The Teachers' Assistant, Or, A System of Practical Arithmetic: Wherein the ...

1845 - 196 pągines
...is the height of the fort? Ans. 14.142+ yards. 8. Suppose a ladder 40 feet long be so planted as to reach a window 33 feet from the ground, on one side of the street, and without moving it at the foot, will reach a window on the other side 21 feet high ; what is the breadth...
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Elements of Drawing and Mensuration Applied to the Mechanic Arts: A Book for ...

Charles Davies - 1846 - 254 pągines
...45 yards : what is the base ? Ans. 28 yds. 4. A ladder 60 feet in length, will reach to a window 40 feet from the ground on one side of the street, and by turning it over to the other side, it will reach a window 50 feet from the ground : required the breadth of the street....
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The principles and practice of arithmetic and mensuration: with the use of ...

James Wharton - 1847 - 224 pągines
...Ans. £5 16s. 0^rf. 7. A ladder, 36 feet long, may be so placed, that it shall reach a window 30-7 feet from the ground on one side of the street ; and, by only turning it over, without moving the foot out of its place, it will do the same by a window 18...
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The Complete Works of Thomas Dick, Volum 2

Thomas Dick - 1850 - 520 pągines
...on the subject, in the book from which it is taken. " A ladder, 40 feet long, may be so placed as to reach a window 33 feet from the ground on one side of the street; and by only turning it over, without moving the foot out of its place, it will do the same by a window 2 1...
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Elementary Geometry: With Applications in Mensuration

Charles Davies - 1850 - 218 pągines
...base 1 Ans. 28 yds. 4. A ladder 60 feet in length, will reach to a window 40 Mensuration of Surfaces. feet from the ground on one side of the street, and by turning it over to the other side, it will reach a window 50 feet from the ground : required the breadth of the street....
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The University Arithmetic: Embracing the Science of Numbers, and Their ...

Charles Davies - 1850 - 412 pągines
...perpendicular 45 yards: what is the base? 3. A ladder 60 feet in length, will reach to a window 40 feet from the ground on one side of the street, and by turning it over to the other side, it will reach a window 50 feet from the ground: required the breadth of the street....
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