Note. When the number of feet happens to be large in either or both of the factors, instead of multiplying by inches (if any be) you may take parts with them. Note. If the number of feet is large, instead of multiplying by inches and seconds, you may take parts with them. A DECIMAL TABLE OF INCHES AND SECONDS. I.S. Decim. I.S.Decim. I.S. Decim. (I.S.] Decim. 1.006944 1090277 2 1.1736113 256944 2.013888 2.097222 2.180555 2.263888 I.S. Decim. I.S. Decim LS. Decim. LS.[Decim. 4 1.340477.5 .42363:6 1.5069447 1.520277 I.S. Decim. I.S., Decim. I.S. Decim.I.S.Decim. 8 6736119 1.756944 10 1.840277111923611 2.680555 2.768888 2.847222 2.930555 3.6875 3.9375 4.944444 THE CONSTRUCTION OF THE FOREGOING TABLE. Let it be required to find what part of a foot one second is in Decimals. 1. One Foot reduced into seconds makes 144 seconds. 2. The Vulgar Fraction will then be of a Foot.. 3. Divide the upper term by the lower, and the quotient thence arising will be the answer. 144)1.000000(.006944+ 864 1360 1296 640 576 640 576 64 After the same manner the whole table is made, except in the case of Inches only; as in the case of one inch, where the Vulgar Fraction will be of a foot. Divide the upper term by the lower, as before, and you have the quotient for the answer. 12)1.000000(.083333+ 4 Note 1. If the given part of a foot consists only of inches the divisor need be no more than 12, because 12 inches make foot. If the given part of a foot consists of seconds only, or inches and seconds together, than 144 must be the divisor? because 144 seconds make 1 foot. |