FORMULAS FOR SHAPES
About the topic formulas for shapes
In this page formulas for shapes you can find many shapes and related formulas.Mensuration is one of the branches of mathematics.This means measurement.It is is being done in our life in many situations.
For example,
A length of cloth we need for stitching, the area of a wall which is being painted, perimeter of the circular garden to be fenced. For these kind of situation we need to use one of these formulas. Here, we cover two major areas.
1. Perimeter
2. Area
Name of shape
|
Formulas |
|
Circle | |
 |
Area of circle = Π r ² Circumference of circle = 2 Π r |
|
Equilateral Triangle | |
 |
Area of Equilateral-triangle = (√3/4) a² Perimeter of Equilateral-triangle = 3a |
|
Scalene Triangle | |
 |
Area of scalene triangle = √s(s-a)(s-b)(s-c) Perimeter of scalene triangle = a + b + c |
|
Semi circle | |
 |
Area of Semi circle= (1/2) Π r² Perimeter of semi-circle = Πr |
|
Quadrant | |
 |
Area of quadrant = (1/4) Π r² |
|
Parallelogram | |
 |
Area of parallelogram = b x h |
|
Quadrilateal | |
 |
Area of quadrilateral =(1/2) x d x (h₁+h₂) |
|
Rectangle | |
 |
Area of rectangle = L x W Perimeter of rectangle=2(l+w) |
|
Square | |
 |
Area of square = a² Perimeter of square = 4a |
|
Rhombus | |
 |
Area of rhombus =(1/2) x (d₁ x d₂) |
|
Trapezoid | |
|
Area of trapezoid =(1/2) (a + b) x h | |
|
Sector | |
 |
Area of the sector = (θ/360) x Π r ² square units (or) Area of the sector = (1/2) x l r square units Length of arc = (θ/360) x 2Πr Examples problems on area of area of sector Examples problems on length of arc |
|
Path ways | |
 | |
|
Combined Figures | |
 | |
|
Area around circle | |
 |
Formulas for shapes would be very useful for school students who are studying lower classes. Here you can find formulas almost for all the shapes. We have also given sample problems to understand these formulas. Most of the problems in mensuration can not be done without these formulas.We have explained each topic with clear pictures. Please go through the examples to understand this topic more clearly.
Related Topics
- Perimeter of sector
- practice questions with solution
- Length of arc
- Practice questions on length of arc
- Perimeter of square
- Perimeter of parallelogram
- Perimeter of rectangle
- Perimeter of triangle
- Area of a circle
- Area of Quadrant
- Area of sector
- Area of triangle
- Area of equilateral triangle
- Area of scalene triangle
- Area of square
- Area of rectangle
- Area of parallelogram
- Area of rhombus
- Area of trapezium
- Area of quadrilateral
- Area around circle
- Area of pathways
- Area of combined shapes
