Graded Work in Arithmetic, Βιβλίο 6American Book Company, 1901 |
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Σελίδα 32
... 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 1451501 A B A PROTRACTOR . 125 130 135 140 145 150 155 160 165 170 175 18 p For the purpose of measuring angles the circumference is supposed. 32 DENOMINATE NUMBERS.
... 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 1451501 A B A PROTRACTOR . 125 130 135 140 145 150 155 160 165 170 175 18 p For the purpose of measuring angles the circumference is supposed. 32 DENOMINATE NUMBERS.
Σελίδα 33
... circumference , the angle ABC is of 360 ° , or 90 ° . D B E A To measure the angle DFE , for example , place the point B of the protractor upon the vertex F of the angle , and the edge BC on the side DF . Then notice the number of ...
... circumference , the angle ABC is of 360 ° , or 90 ° . D B E A To measure the angle DFE , for example , place the point B of the protractor upon the vertex F of the angle , and the edge BC on the side DF . Then notice the number of ...
Σελίδα 34
Samuel Wesley Baird. 2 of the circumference of a circle . It varies , therefore , with the size of the circle . If the circumference of the earth at the equator is divided into 360 equal parts , one of these parts expresses a degree of ...
Samuel Wesley Baird. 2 of the circumference of a circle . It varies , therefore , with the size of the circle . If the circumference of the earth at the equator is divided into 360 equal parts , one of these parts expresses a degree of ...
Σελίδα 39
... circumference ( 360 ° ) is described by the apparent revolution of the sun around the earth in 24 hours . Since the sun appears to travel through 360 ° of longitude in 24 hours , in 1 hour it appears to travel through of 360 ° , or 15 ...
... circumference ( 360 ° ) is described by the apparent revolution of the sun around the earth in 24 hours . Since the sun appears to travel through 360 ° of longitude in 24 hours , in 1 hour it appears to travel through of 360 ° , or 15 ...
Σελίδα 49
... circumference into as many equal parts ( arcs ) as the polygon is to have sides ; then connect the points of division with straight lines ( chords ) . For example , to construct a regular polygon of five sides , we first draw a circle ...
... circumference into as many equal parts ( arcs ) as the polygon is to have sides ; then connect the points of division with straight lines ( chords ) . For example , to construct a regular polygon of five sides , we first draw a circle ...
Άλλες εκδόσεις - Προβολή όλων
Graded Work in Arithmetic: Second Year; Numbers to 100 (Classic Reprint) S. W. Baird Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Graded Work in Arithmetic: Second Year; Numbers to 100 (Classic Reprint) S. W. Baird Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Συχνά εμφανιζόμενοι όροι και φράσεις
9 ft acres altitude angle approximate number Avoirdupois barrel board feet board foot bought carpet Change circle circumference contain cord cube cubic feet cubic foot cubic inches cubic yard deducting diameter difference in longitude divided dozen dry measure equal equiangular polygon exact number Find the amount Find the approximate Find the area Find the cost Find the exact Find the gain Find the interest Find the number Find the volume flour fraction gallons integers of lower latitude LESSON lower denominations measure meridian mile MODEL number increased number of board number of bushels number of cubic o'clock A.M. paid piece of land pint pound prism protractor quart radius ratio rectangle regular polygon rhomboid rhombus square inches square yard thick tons trapezium trapezoid triangle Troy Troy pound Troy weight wall weight wide worth
Δημοφιλή αποσπάσματα
Σελίδα 149 - Thirty days hath September, April, June, and November ; All the rest have thirty-one, Except the second month alone, Which has but twenty-eight, in fine, Till leap year gives it twenty-nine.
Σελίδα 145 - A Cord of wood is a pile 8 ft. long, 4 ft. wide, and 4 ft. high ; for 8 x 4 x 4 = 128.
Σελίδα 141 - If 4% bonds to the amount of $8000 face value are bought at 92^%, find the cost of the bonds, and the rate of income on the investment. 12. If 3 men can do a piece of work in 8 days of 10 hours each, how many men will be required to do the same work in 6 days of 8 hours each ? (Solve by proportion.) 13. By selling a horse for $144, a profit of 60 per cent is made; find the cost of the horse.
Σελίδα 46 - What must be the nominal value of 4% bonds that will yield to their owner an annual income of $720 ? 7. A owns $6000 of 5% bonds; B owns $8000 of 4£% bonds. How much greater is the annual income from B's bonds than from A's ? 8. Find the area of a piece of land in the form of a rhomboid, whose base is 32 rods and whose altitude is 15 rods.
Σελίδα 47 - Definitions. Polygons are classed according to the number of their sides: A triangle is a polygon of three sides. A quadrilateral is a polygon of four sides. A pentagon has five sides ; a hexagon, six ; a heptagon, seven ; an octagon, eight ; an enneagon, nine ; a decagon, ten ; a dodecagon, twelve ; etc. . An equilateral polygon is one all of whose sides are equal ; an equiangular polygon, one all of whose angles are equal.
Σελίδα 148 - February 28, in leap year 29. 3. March 31 4. April 30 5. May 31 6. June . 30 7. July 31 8. August 31 9. September 30 10.
Σελίδα 149 - ANGULAR MEASURE. 60 seconds (") = 1 minute ('). 60 minutes = 1 degree (°). 360 degrees = 1 circumference.
Σελίδα 60 - If 5 men can do | of a piece of work in a day, how long will it take one man to do the entire work?
Σελίδα 37 - Such is the effect produced by the unequal heating of the equatorial parts; or, more correctly, such would be the effect were it not greatly modified by the earth's movement of rotation. As the circumference of the earth is, in round numbers, about 24,000 miles, and since it rotates on its axis, from west to east, once in 24 hours, the equatorial parts must have a motion of 1000 miles per hour; this velocity diminishes rapidly toward each pole, where it is reduced to nothing.
Σελίδα 52 - A circle may be regarded as composed of an infinite number of triangles, the sum of whose bases is the circumference of the circle and whose altitude is the radius of the circle.