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American Book Company, 1920 - Arithmetic
 

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Page 250 - CUBIC MEASURE 1728 cubic inches (cu. in.) =1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu. yd.) 128 cubic feet = 1 cord (cd...
Page 141 - In any proportion, the product of the means is equal to the product of the extremes.
Page 273 - Multiply the complete divisor by the second figure of the root and subtract the product from the dividend.
Page 110 - ANGULAR MEASURE. 60 seconds (") = 1 minute ('). 60 minutes = 1 degree (°). 360 degrees = 1 circumference.

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