5989. To Find the Area of a Parallelogram or Square

5989.    To Find the Area of a Parallelogram or Square. Multiply the length of one side by the perpendicular height.

5990. To Find the Area of a Triangle

5990.    To Find the Area of a Triangle. Multiply the base by 1/2 the perpendicular height. Or, to find the area from three rides given, from the half sum of the three sides subtract each side separately; multiply the half sum and the three remainders together, and the square root of the product will be the area.

5991. To Find the Area of a Trapezoid

5991.    To Find the Area of a Trapezoid. Multiply the sum of the two parallel sides by 1/2 the perpendicular height.

5992. To Find the Area of a Sector of a Circle

5992.    To Find the Area of a Sector of a Circle. Multiply the radius of the circle by 1/2 the arc of the sector.

5993. To Find the Area of a Segment of a Circle

5993.    To Find the Area of a Segment of a Circle. Find the area of a sector of a circle having the same arc, and deduct the triangle formed between the two radii and the chord of the arc.

5994. Cloth Measure, used for measuring dry goods

5994.    Cloth Measure, used for measuring dry goods.

" hand" of 4 inches.

5995. Gunter's Chain

5995.      Gunter's Chain. This is the measure generally adopted in land surveying, is 22 yards in length, and contains 100 links, each link, consequently being 7.92 inches long. The length of the chain was fixed at 22 yards, because a square whose side is 22 yards (1 chain) contains exactly 1/10 acre; in other words, a rectangular plot of ground 1 chain in width and 10 chains in length contains an acre. 80 chains make 1 mile in length; and, consequently, a square mile contains 640 acres. For surveying and laying out plots and building lots, a chain of 50 feet, or one of 25 feet (the usual frontage of a lot) is usually employed by surveyors.

5996. Cubic or Solid Measurement

5996.   Cubic or Solid Measurement.

Yard.                Feet.                  Inches.

1 = 27 = 46,656