Submitted by: Submitted by johnrey
Views: 22
Words: 692
Pages: 3
Category: Other Topics
Date Submitted: 03/26/2015 04:01 AM
Mensuration Formulas
Mensuration is the branch of mathematics which deals with the study of Geometric shapes, their area, volume and related parameters.
Some important mensuration formulas are:
1. Area of rectangle (A) = length(l) × Breath(b)
2. Perimeter of a rectangle (P) = 2 × (Length(l) + Breath(b))
3. Area of a square (A) = Length (l) × Length (l)
4. Perimeter of a square (P) = 4 × Length (l)
5. Area of a parallelogram(A) = Length(l) × Height(h)
6. Perimeter of a parallelogram (P) = 2 × (length(l) + Breadth(b))
7. Area of a triangle (A) = (Base(b) × Height(b)) / 2
And for a triangle with sides measuring “a” , “b” and “c” , Perimeter = a+b+c
and s = semi perimeter = perimeter / 2 = (a+b+c)/2
And also: Area of triangle =
This formulas is also knows as “Heron’s formula”.
8. Area of triangle(A) =
Where A, B and C are the vertex and angle A , B , C are respective angles of triangles and a , b , c are the respective opposite sides of the angles as shown in figure below:
area of triangle - mensuration
9. Area of isosceles triangle =
Where a = length of two equal side , b= length of base of isosceles triangle.
10. Area of trapezium (A) =
Where “a” and “b” are the length of parallel sides and “h” is the perpendicular distance between “a” and “b” .
11. Perimeter of a trapezium (P) = sum of all sides
12. Area of rhombus (A) = Product of diagonals / 2
13. Perimeter of a rhombus (P) = 4 × l
where l = length of a side
14. Area of quadrilateral (A) = 1/2 × Diagonal × (Sum of offsets)
15. Area of a Kite (A) = 1/2 × product of it’s diagonals
16. Perimeter of a Kite (A) = 2 × Sum on non-adjacent sides
17. Area of a Circle (A) =
Where r = radius of the circle and d = diameter of the circle.
18. Circumference of a Circle =
r= radius of circle
d= diameter of circle
19. Total surface area of cuboid =
where l= length , b=breadth , h=height
20. Total surface...