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" A ladder 40 feet long may be so placed that it shall reach a window 33 feet from the ground on one side of the street, and by turning it over, without moving the foot out of its place, it will do the same by a window 21 feet high on the other side. Required... "
A Course of Mathematics ...: Composed for the Use of the Royal Military ... - Σελίδα 22
των Charles Hutton - 1811
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A Treatise on Mensuration for the Use of Schools

Commissioners of National Education in Ireland - 1837 - 290 σελίδες
...planted, that it shall 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 21 feet high o» the other side ; what is the breadth of the street ? Ans. 56 feet 1\ inches. 6. In...

The Family Magazine, Τόμος 4

1837 - 490 σελίδες
...placed as to reach a window thirty-three feet from the ground on one side of the streets ; and by only turning it over, without moving the foot out of its place, it will do the same by a window twenty-one feet high on the other side. Required the breadth of the street ?" The foregoing is the...

On the mental illumination and moral improvement of mankind

Thomas Dick - 1840 - 454 σελίδες
...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 21 feet high on the other side. Required the breadth of the street"!" The following is the representation...

Plane and Spherical Trigonometry ...

Henry W. Jeans - 1842 - 138 σελίδες
...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 high on the other side. What is the breadth of the street, and the angle...

Watson's Tutor's assistant; or, Complete school arithmetic

William Watson (of Beverley.) - 1845 - 188 σελίδες
...from the ground on one side, and by turning it over without removing the foot, it reached another 30 feet high on the other side ; required the breadth of the street. Ans. 70 feet. 9. Two travellers started from the same place at eight in the morning, one travelling north-west...

Elements of plane (solid) geometry (Higher geometry) and trigonometry (and ...

Nathan Scholfield - 1845 - 894 σελίδες
...and by turning the ladder over, without removing the foot out of its place, it touched a moulding 36 feet high on the other side : required the breadth of the street. Ans. 75.1233335 feet. Ex. 5. Two ships set sail from the same port ; one of them sails due West 50 miles...

The Columbian Calculator: Being a Practical and Concise System of Decimal ...

Almon Ticknor - 1846 - 274 σελίδες
...from the ground, on one side of the street, and without moving it at the foot, will reach a window 23 feet high, on the other side ; required the breadth of the street ? Ans. 102.64. 55. The Bunker Hill monument in Charlestown, near Boston, is said to be 225 feet high ; the...

The principles and practice of arithmetic and mensuration: with the use of ...

James Wharton - 1847 - 224 σελίδες
...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 '9 feet high on the other side; what is the breadth of the street, and the angle of elevation of...

An Introduction to Mensuration and Practical Geometry

John Bonnycastle - 1848 - 320 σελίδες
...ground, on one side ; and by turn ing it over, without removing the foot, it reached anothei window, 36 feet high, on the other side; required the breadth of the street. Ans. 76.1233/ect PROBLEM V. To find the area of a trape2ium, RULE.* Multiply the diagonal by the sum of...

Principles of geometry, mensuration, trigonometry, land-surveying, and ...

Thomas Tate (mathematical master.) - 1848 - 284 σελίδες
...ground on one side ; and, upon being turned over without moving the foot, will reach a window 36 ft. high on the other side ; required the breadth of the street. Ans. 63ft. 9. The legs of a right-angled triangle are 50 and 37-5 ; required the perpendicular let fall...




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