First Lessons in Geometry: With Practical Applications in Mensuration, and Artificers' Work and MechanicsA.S. Barnes, 1840 - 252 σελίδες |
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Σελίδα 117
... decimals , the decimals are generally carried to four places , and then taken to the nearest figure . That is , if the fifth decimal figure is 5 , or greater than 5 , the fourth figure is increased by one . QUEST . - 1 . What is the ...
... decimals , the decimals are generally carried to four places , and then taken to the nearest figure . That is , if the fifth decimal figure is 5 , or greater than 5 , the fourth figure is increased by one . QUEST . - 1 . What is the ...
Σελίδα 119
... decimal places from the right hand . If the decimal part be then multiplied by 4 , and five places of decimals pointed off from the right hand , the figures to the left will express the roods . If the decimal part of this result be now ...
... decimal places from the right hand . If the decimal part be then multiplied by 4 , and five places of decimals pointed off from the right hand , the figures to the left will express the roods . If the decimal part of this result be now ...
Σελίδα 120
... decimal places from the right hand . 3d . If chains be multiplied by chains , the product is reduced to acres by pointing off one decimal place from the right hand . 7. Since there are 16,5 feet in a rod , a square rod is equal to 16,5 ...
... decimal places from the right hand . 3d . If chains be multiplied by chains , the product is reduced to acres by pointing off one decimal place from the right hand . 7. Since there are 16,5 feet in a rod , a square rod is equal to 16,5 ...
Σελίδα 141
... decimal , 01745 , and the product arising by the radius of the circle . EXAMPLES . 1. What is the length of an arc of 30 degrees , in a circle whose radius is 9 feet . QUEST . - 20 . How do you find the length of an arc when you know ...
... decimal , 01745 , and the product arising by the radius of the circle . EXAMPLES . 1. What is the length of an arc of 30 degrees , in a circle whose radius is 9 feet . QUEST . - 20 . How do you find the length of an arc when you know ...
Σελίδα 142
... decimal by the num- ber of degrees , and by the radius . Operation . , 01745 × 30 × 9 = 4,7115 , X which is the length of the required arc . 21. REMARK . When the arc contains degrees and minutes , reduce the minutes to the decimals of ...
... decimal by the num- ber of degrees , and by the radius . Operation . , 01745 × 30 × 9 = 4,7115 , X which is the length of the required arc . 21. REMARK . When the arc contains degrees and minutes , reduce the minutes to the decimals of ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
12 feet 20 feet acres altitude bisect bounded by Planes breadth called centre of gravity chord circular sector circumfer circumference cone convex surface cubic feet cubic foot cubic inches cylinder decimal diagonals diameter distance divide draw equilateral triangle EXAMPLES Explain the manner feet 6 inches figure find the area find the solidity frustum given angle given line given point gles half hypothenuse intersect line be drawn linear unit lower base manner of inscribing Mensuration of Surfaces multiplied number of square parallel planes parallelogram parallelopipedon pentagon pentagonal pyramid perpendicular Practical Geometry.-Problems PROBLEM pulley pyramid radius rectangle regular polygon regular solids Required the area rhombus right angled triangle Round Bodies RULE scale of equal secant line segment similar polygons similar triangles slant height solid content solid feet Solids bounded specific gravity sphere square feet square yards straight line tangent thickness upper base weight
Δημοφιλή αποσπάσματα
Σελίδα 20 - Every circumference of a. circle, whether the circle be large or small, is supposed to be divided into 360 equal parts called degrees. Each degree is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.
Σελίδα 32 - The area of a rectangle is equal to the product of its base and altitude. Given R a rectangle with base b and altitude a. To prove R = a X b. Proof. Let U be the unit of surface. .R axb U' Then 1x1 But - is the area of R.
Σελίδα 40 - Similar triangles are to each other as the squares described on their homologous sides. Let ABC, DEF be two similar triangles...
Σελίδα 82 - A zone is a portion of the surface of a sphere included between two parallel planes.
Σελίδα 235 - An equilibrium is produced in all the levers, when the weight multiplied by its distance from the fulcrum is equal to the product of the power multiplied by its distance from the fulcrum. That...
Σελίδα 84 - The convex surface of a cylinder is equal to the circumference of its base multiplied by its altitude.
Σελίδα 34 - The area of a triangle is equal to half the product of the base and height.
Σελίδα 35 - If two triangles have two sides and the included angle of the one, equal to two sides and the included angle of the other, each to each, the two triangles will be equal in all their parts." Axiom 1. "Things which are equal to the same thing, are equal to each other.
Σελίδα 20 - For this purpose it is divided into 360 equal parts, called degrees, each degree is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. The degrees, minutes, and seconds, are marked thus, °, ', " ; and 9° 18' 10", are read, 9 degrees, 18 minutes, and 10 seconds.
Σελίδα 83 - The surface of a sphere is equal to the product of its diameter by the circumference of a great circle.