Common formulas used in Math and Science. Grades: 9 10 11 12 Subjects: Mathematics Formulas and Functions ADD TO FAVORITES Hide lower priority columns Add to Folder creative writing children's book activities classroom tools language arts and writing vocabulary Create new folderCREATE NEW FOLDER Print Circumference Circle: C = d, in which is 3.1416 and d the diameter.Area Triangle: A = (ab)/2 , in which a is the base and b the height. Square: A = a2, in which a is one of the sides. Rectangle: A = ab, in which a is the base and b the height. Trapezoid: A = (h(a + b))/2, in which h is the height, a the longer parallel side, and b the shorter. Regular pentagon: A = 1.720a2, in which a is one of the sides. Regular hexagon: A = 2.598a2, in which a is one of the sides. Regular octagon: A = 4.828a2, in which a is one of the sides. Circle: A = r2, in which is 3.1416 and r the radius.Volume Cube: V = a3, in which a is one of the edges. Rectangular prism: V = abc, in which a is the length, b is the width, and c the depth. Pyramid: V = (Ah)/3, in which A is the area of the base and h the height. Cylinder: V = r2h, in which is 3.1416, r the radius of the base, and h the height. Cone: V = (r2h)/3, in which is 3.1416, r theradius of the base, and h the height. Sphere: V = (4r3)/3, in which is 3.1416 and r the radius.Temperature ScalesDegrees Fahrenheit to Degrees Celsius:TC = 5/9 (TF 32)Degrees Celsius to Degrees Fahrenheit:TF = 9/5 TC + 32Degrees Celsius to Kelvin:TK = TC + 273.15Miscellaneous Distance in feet traveled by falling body: d = 16t2, in which t is the time in seconds. Speed of sound in feet per second through any given temperature of air: take the square root of (273 + t), in which t is the temperature Centigrade, multiply it by 1087, and divide the result by 16.52. Cost in cents of operation of electrical device: C = (Wtc)/1000, in which W is the number of watts,t the time in hours, and c the cost in cents per kilowatt-hour. Conversion of matter into energy (Einstein's Theorem): E = mc2, in which E is the energy in ergs, m the mass of the matter in grams, and c the speed of light in centimeters per second: (c2 = 9 × 1020)
