## Book III |

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### Common terms and phrases

acre added amount angle Answer average base bought called Check Chicago circle City column common contain corner cost cube cubic decimal denotes diameter difference digit discount distance divided division divisor draw east equal equation excess Express factors feet fence FIGURE Find force fraction Give given ground hour inches interest length longitude mark means measured meridian miles months move multiplied needed NOTE Page paid percent places pounds Principle prism problem radius ratio rectangle represents result rods running scale shown sides sold solve square stand straight subtract surface tons train triangle units volume weight whole wide write written

### Popular passages

Page 84 - Measures of Surface. The unit upon which surface measure is based is the square yard, which is a square each of whose sides equals 1 yard. TABLE OF COMMON SURFACE MEASURE 144 square inches (sq. in.) — 1 square foot (sq. ft.) 9 square feet — 1 square yard (sq. yd.) 30J square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) TABLE OF

Page 84 - 30J square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) TABLE OF SURVEYORS' SURFACE MEASURE 625 square links (sq. li.) = 1 square rod (sq. rd.) 16 square rods — 1 square chain (sq. ch.) 10 square chains - 1 acre (A.) 640 acres (a section) =- 1 square mile (sq. mi.) 36 square miles = 1 township (Tp.)

Page 212 - Write the pairs of factors of 36 thus: 1 and 36; 2 and 18; 3 and 12; 4 and 9; 6 and 6. Proceed similarly with the rest. The square root of a number is one of the two equal factors of

Page 239 - the United States: RULE.—Find the amount of the principal to the time when the payment or the sum of the payments equals or exceeds the interest due; subtract from this amount the payment or the sum of the payments. Treat the remainder as a new principal and proceed as before. ILLUSTRATIVE

Page 85 - Measures of Volume. TABLE OF CUBIC MEASURE 1728 cubic inches (cu. in.) — 1 cubic foot (cu, ft.) 27 cubic feet — 1 cubic yard (cu. yd.) TABLE OF EQUIVALENTS

Page 32 - 1. 3. The average hourly temperatures from 6 AM to 6 PM, December 26 to January 2, were: 6 AM 7 AM 8 AM 9 AM 10 AM 11 AM 21.5° 22.1° 22.2° 22.2° 22.5° 23.2° 12 M. 1 PM 2 PM 3 PM 4 PM

Page 217 - 30. A straight line drawn from the vertex of an isosceles triangle to the middle of the base is perpendicular to the base. Find the area of a regular pentagon whose sides are 24", if the radius of the circle drawn around the

Page 84 - MEASURE 625 square links (sq. li.) = 1 square rod (sq. rd.) 16 square rods — 1 square chain (sq. ch.) 10 square chains - 1 acre (A.) 640 acres (a section) =- 1 square mile (sq. mi.) 36 square miles = 1 township (Tp.)

Page 32 - 12 M. 1 PM 2 PM 3 PM 4 PM 5 PM 6 PM 23.9° 24° 24.5° 25.2° 25° 24.7° 24.3° Plot these readings on squared paper, or by measurement, as

Page 76 - 6. It is proved in Geometry that the ratio of the circumference of any circle to its diameter is about 3y, or more accurately 3.1416. If then, the diameter of a circle is known, how may the circumference be found without measurement?