Introduction to basic math formulas:
Math formula defined as a group of symbols that build a mathematical statement. We are having lots and lots of formulas in math. Here we are going to see some of the basic formula’s in math such as geometric formulas and algebraic formulas. These formulas are very essential to understand the math clearly.
Basic geometric math formulas
Area formulas:
Area of square = a 2
Area of rectangle = ab
Area of parallelogram = bh
Area of trapezoid = `h/2` (b1 + b2)
Area of circle = pi r 2
Area of ellipse = pi r1 r2
Triangle given SAS (two sides and the opposite angle) = (1/2) a b sin C
Triangle
sum of angles = 180°
area = ½ (base x height)
Perimeter formulas:
Perimeter of a square: s + s + s + s
Here s: length of one side
Perimeter of a rectangle: l + w + l + w
w: width and l: length
Perimeter of a triangle: a + b + c
a, b, and c: lengths of the 3 sides
Circle circumference ? 3.14 x diameter
Volume formulas:
Volume of a cube: s × s × s
s: length of one side
Volume of a box: l × w × h
l: length
w: width
h: height
Volume of a sphere: (`4/3` ) × pi × r3
pi: 3.14
r: radius of sphere
Volume of a triangular prism:
Area of triangle × Height = (`1/2` base × height) × Height
base: length of the base of the triangle
height: height of the triangle
Height: height of the triangular prism
Volume of a cylinder: pi × r2 × Height
pi: 3.14
r: radius of the circle of the base
Height: height of the cylinder
Rectangular Solid (Box) volume = length x width x height
Cube volume = (length of side)3
Cylinder volume ? `pi` (radius)2 x height
Basic algebra math formulas
Basic Closure Property of Addition
Sum of 2 real numbers equals a real number
Additive Identity a + 0 = a
Additive Inverse a + (-a) = 0
Associative of Addition (a + b) + c = a + (b + c)
Commutative of Addition a + b = b + a
Definition of Subtraction a - b = a + (-b)
Basic Closure Property of Multiplication
Product of 2 real’s equals a real number
Multiplicative Identity a * 1 = a
Multiplicative Inverse a * (1/a) = 1 (a? 0)
(Multiplication times 0) a * 0 = 0
Associative of Multiplication (a * b) * c = a * (b * c)
Commutative of Multiplication a * b = b * a
Distributive Law a(b + c) = ab + ac
Math formula defined as a group of symbols that build a mathematical statement. We are having lots and lots of formulas in math. Here we are going to see some of the basic formula’s in math such as geometric formulas and algebraic formulas. These formulas are very essential to understand the math clearly.
Basic geometric math formulas
Area formulas:
Area of square = a 2
Area of rectangle = ab
Area of parallelogram = bh
Area of trapezoid = `h/2` (b1 + b2)
Area of circle = pi r 2
Area of ellipse = pi r1 r2
Triangle given SAS (two sides and the opposite angle) = (1/2) a b sin C
Triangle
sum of angles = 180°
area = ½ (base x height)
Perimeter formulas:
Perimeter of a square: s + s + s + s
Here s: length of one side
Perimeter of a rectangle: l + w + l + w
w: width and l: length
Perimeter of a triangle: a + b + c
a, b, and c: lengths of the 3 sides
Circle circumference ? 3.14 x diameter
Volume formulas:
Volume of a cube: s × s × s
s: length of one side
Volume of a box: l × w × h
l: length
w: width
h: height
Volume of a sphere: (`4/3` ) × pi × r3
pi: 3.14
r: radius of sphere
Volume of a triangular prism:
Area of triangle × Height = (`1/2` base × height) × Height
base: length of the base of the triangle
height: height of the triangle
Height: height of the triangular prism
Volume of a cylinder: pi × r2 × Height
pi: 3.14
r: radius of the circle of the base
Height: height of the cylinder
Rectangular Solid (Box) volume = length x width x height
Cube volume = (length of side)3
Cylinder volume ? `pi` (radius)2 x height
Basic algebra math formulas
Basic Closure Property of Addition
Sum of 2 real numbers equals a real number
Additive Identity a + 0 = a
Additive Inverse a + (-a) = 0
Associative of Addition (a + b) + c = a + (b + c)
Commutative of Addition a + b = b + a
Definition of Subtraction a - b = a + (-b)
Basic Closure Property of Multiplication
Product of 2 real’s equals a real number
Multiplicative Identity a * 1 = a
Multiplicative Inverse a * (1/a) = 1 (a? 0)
(Multiplication times 0) a * 0 = 0
Associative of Multiplication (a * b) * c = a * (b * c)
Commutative of Multiplication a * b = b * a
Distributive Law a(b + c) = ab + ac
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