Mathematics for Common Schools: A Manual for Teachings, Including Definitions, Principles, and Rules and Solutions of the More Difficult ProblemsD.C. Heath & Company, 1895 - 312 σελίδες |
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Σελίδα 160
... radius - = 4 ft . 8. One goes 48 mi . per hour ; the other goes the same distance in the same time . 9. Area of first 4 × 212. Reduce . 63 × 41 = 64 ; of second - 4 x 2 Ratio = = 1051. 2. Cost of farm = $ 75.50 × 1561 × 124.6 ÷ 160 ...
... radius - = 4 ft . 8. One goes 48 mi . per hour ; the other goes the same distance in the same time . 9. Area of first 4 × 212. Reduce . 63 × 41 = 64 ; of second - 4 x 2 Ratio = = 1051. 2. Cost of farm = $ 75.50 × 1561 × 124.6 ÷ 160 ...
Σελίδα 200
... Radius area ( ×× 3.1416 ) sq . ft . = . 7854 sq . ft . Entire surface = 3.1416 sq . ft . + . 7854 sq . ft . + . 7854 sq . ft . = 4.7124 sq . ft . Ans . 15. See Arithmetic , Art . 1290. While pupils should be per- FIG . 3 . mitted to ...
... Radius area ( ×× 3.1416 ) sq . ft . = . 7854 sq . ft . Entire surface = 3.1416 sq . ft . + . 7854 sq . ft . + . 7854 sq . ft . = 4.7124 sq . ft . Ans . 15. See Arithmetic , Art . 1290. While pupils should be per- FIG . 3 . mitted to ...
Σελίδα 207
... radius is 10 in . Area of sector of ( 15.708 × 10 ) sq . in . 78.54 sq . in . Ans . of ( 10 × 10 ) sq . in . = 50 sq . in .; area of - 50 sq . in . 28.54 sq . in . Ans . Area of triangle = segment 78.54 sq . in . 8. R2 × 3.1416 . Ans ...
... radius is 10 in . Area of sector of ( 15.708 × 10 ) sq . in . 78.54 sq . in . Ans . of ( 10 × 10 ) sq . in . = 50 sq . in .; area of - 50 sq . in . 28.54 sq . in . Ans . Area of triangle = segment 78.54 sq . in . 8. R2 × 3.1416 . Ans ...
Σελίδα 249
... radius , draw an arc be- tween the lines . This arc will measure 72 ° . Darken the lines from the arc to the vertex to show the radii of the circle of which the arc is a part . FIG . 7 . 81 , 82. Figs . 8 and 9 show sectors NOTES ON ...
... radius , draw an arc be- tween the lines . This arc will measure 72 ° . Darken the lines from the arc to the vertex to show the radii of the circle of which the arc is a part . FIG . 7 . 81 , 82. Figs . 8 and 9 show sectors NOTES ON ...
Σελίδα 251
... radius ( 79 ) , the shortest method of inscribing a hexagon is to apply the radius as a chord six times . Two of these divisions of the circum- ference will make arcs of 120 ° , the chords of three of these form- ing the sides of an ...
... radius ( 79 ) , the shortest method of inscribing a hexagon is to apply the radius as a chord six times . Two of these divisions of the circum- ference will make arcs of 120 ° , the chords of three of these form- ing the sides of an ...
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acres algebraic altitude amount angle answer apothem Arithmetic base bisecting calculate Cancel cents chord ciphers circle circumference common fraction construct contains convex surface cost days of grace deducting diameter difference discount dividend dividing division draft draw drawn employed equal equation examples exercises factors figure frustum given gives greatest common divisor Heart of Oak hypotenuse improper fraction inches interest intersecting least common multiple length measure method minuend mixed numbers multiplying NOTES ON CHAPTER number of degrees number of square obtain par value payment perpendicular pounds principal problems profits protractor pupils quarts quotient radius rectangle reduce remaining result rhombus right-angled triangle rods RULE scholars selling price side slant height solve subtract subtrahend teacher whole number write yards