## Concrete

 Cross - References: Shapes: Specific Weight Circle 1 pound water = 27.7 cubic inches = 0.1198 gallons Area = Square of Diameter x .7854 or 1 cubic foot water = 62.43 pounds Radius x 3.1416 1 gallon water = 8.345 pounds Circumference = Diameter x 3.1416 Length 1 inch = 2.54 centimeters Diameter = Circumference ÷ 3.1416 1 centimeter = 0.39 inches 1 foot = .0305 meter Area of Circular Ring = .7854 x (Outside Diameter Squared minus Inside Diameter Squared) 1 meter = 3.28 feet 1 mile = 1.61 kilometers Doubling diameter increases area four (4) times 1 kilometer = .62 miles Tripling diameter increases area nine (9) times Inches to centimeters - multiply by 2.54 Square/Rectangle Centimeters to inches - multiply by .039 Area = Length x Width Feet to meters - multiply by 0.305 Diagonal = Square Root of width squared + length squared Meters to feet - multiply by 3.28 Volume Side (square only) = Diagonal x .7071 1 fluid ounce = 29.57 milliliters 10 milliliters = 0.34 fluid oz Triangle 1 quart = 9.46.35 milliliters Area = Base x 1/2 of perpendicular height 1 liter = 1.06 US quarts 1 gallon = 3.79 Cube Area of surface = Square of side x 6 Ounces to milliliters - multiply by 29.57 Milliliters to ounces - multiply by 0.034 Volume = Cube of side Quarts to liters - multiply by .095 Diagonal = Side x 1.732 Liters to quarts - multiply by 1.06 Cylinder 1 cubic inch = 16.39 cubic centimeters Area of Curved Surface = Diameter x Length x 3.1416 1 cubic foot = 1728 cubic inches = 7.48 gallons 1 cubic yard = 27 cubic feet = 0.7646 cubic meters Volume = Square of Diameter x .7854 x length Cone Area of Curved Surface = Diameter of Base x Slant Height x 1.5708 Volume = Diameter of Base Squared x Perpendicular Height x .2618 or Area of Base x 1/3 Perpendicular Height