Basic Geometry Formulas
We study Geometry formulas under two headings that are,
- 2-D Formulas
- 3-D Formulas
2 D Formulas
- Rectangle
- Perimeter of Rectangle = 2(l + b)
- Area of Rectangle = l × b
Where
‘l’ is Length
‘b’ is Breadth
- Square
- Area of Square = a2
- Perimeter of Square = 4a
Where
‘a’ is the length of sides of a Square
- Triangle
- Area of Triangle= 1/2 × b × h
Where
‘b’ is the base of the triangle and
‘h’ is the height of the triangle
- Trapezoid
- Area of Trapezoid = 1/2 × (b1 + b2) × h
Where
b1 and b2 are the bases of Trapezoid
h is height of Trapezoid
- Circle
- Area of Circle = π × r2
- Circumference of Circle = 2πr
Where
‘r’ is radius of a Circle
Various formulas used for 2-D objects are,
3 D Formulas
- Cube
- Surface Area of Cube = 6a2
- Volume of Cube = a3
Where
‘a’ is the length of sides of Cube
- Cylinder
- Curved Surface Area of Cylinder = 2πrh
- Total Surface Area of Cylinder = 2πr(r + h)
- Volume of Cylinder = V = πr2h
Where
‘r’ is the radius of base of Cylinder
‘h’ is the height of Cylinder
- Cone
- Curved Surface Area of Cone = πrl
- Total Surface Area of Cone = πr(r + l) = πr[r + √(h2 + r2)]
- Volume of Cone = V = 1/3× πr2h
where,
‘r’ is the Radius of base of Cone
h is the Height of the Cone
- Sphere
- Surface Area of a Sphere = S = 4πr2
- Volume of a Sphere = V = 4/3 × πr3
Where,
r is the Radius of Sphere
Various formulas used for 3-D objects are,
Basic Math Formulas
Basic Math Formulas: Mathematics is divided into various branches as per the way of calculation involved and the topics covered by them all the branches have various formulas that are used for solving various mathematics problems. The branches include geometry, algebra, arithmetic, percentage, exponential, etc.
This article will provide you with all the basic formulas for different branches of mathematics including trigonometry, geometry, algebra, probability, coordinate geometry, etc.