Geometry is a branch of mathematics that deals with shape, size, the relative position of figures, and the properties of shapes. It emerges independently in the number of early cultures as a practical way of dealing with lengths, area and volumes.
Geometry can be divided into two different types: Plane Geometry and Solid Geometry. The Plane Geometry deals with shapes such as circles, triangles, rectangles, square and more. Whereas, the Solid Geometry is concerned in calculating the length, perimeter, area and volume of various geometric figures and shapes.
The main concern of every student about maths subject is the Geometry Formulas. They are used to calculate the length, perimeter, area and volume of various geometric shapes and figures. There are many geometric formulas, which are related to height, width, length, radius, perimeter, area, surface area or volume and much more.
Some geometric formulas are rather complicated and few you might hardly ever seen them, however, there are some basic formulas which are used in our daily life to calculate the length, space and so on.
| Geometry Formulas from Class 8 to Class 12 |
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| Geometry Formulas For Class 12 |
| Geometry Formulas For Class 11 |
| Geometry Formulas For Class 10 |
| Geometry Formulas For Class 9 |
| Geometry Formulas For Class 8 |
Here is a list of several most important geometry formulas that you use for solving various problems.
Basic Geometry Formulas
- Perimeter of a Square = P = 4a
Where a = Length of the sides of a Square
- Perimeter of a Rectangle = P = 2(l+b)
Where, l = Length ; b = Breadth
- Area of a Square = A = a2
Where a = Length of the sides of a Square
- Area of a Rectangle = A = l×b
Where, l = Length ; b = Breadth
- Area of a Triangle = A = ½×b×h
Where, b = base of the triangle; h = heightof the triangle
- Area of a Trapezoid = A = ½×(b1+ b2)×h
Where b1&b2are the bases of the Trapezoid; h =heightof theTrapezoid
- Area of a Circle = A = π×r2
- Circumference of a Circle = A = 2πr
Where, r = Radius of the Circle
- Surface Area of a Cube = S = 6a2
Where,a = Length of the sides of a Cube
- Curved surface area of a Cylinder = 2πrh
- Total surface area of a Cylinder = 2πr(r + h)
- Volume of a Cylinder = V = πr2h
Where, r = Radius of the base of the Cylinder; h = Height of theCylinder
- Curved surface area of a cone = πrl
- Total surface area of a cone = πr(r+l) = πr[r+√(h2+r2)]
- Volume of a Cone = V = ⅓×πr2h
Where, r = Radius of the base of the Cone, h = Height of the Cone
- Surface Area of a Sphere = S = 4πr2
- Volume of a Sphere = V = 4/3×πr3
Where, r = Radius of the Sphere
