Monday, September 1, 2014

formula of 8 std.


Text Box: FORMULA OF STANDARD 8By Pythagoras theorem,

(Hypotenuse)2 = (side one)2+ (side two)2

Area of rectangle= length*breadth

Side of square= (side)2

Area of a parallelogram= base*height

Area of a triangle= base*height

Area of an equilateral triangle= (side)2

Area of a rhombus = ½*products of lengths of diagonals

Area of a trapezium =*sum of lengths of parallel sides*height

Area of triangle=

Diameter =

Radius =

Area of the circle = πr2

(a+b)2 = a2+2ab + b2

(A-b) = a2-2ab + b2

(A+b) (A-b) = a2 – b2

(x+5) = x2 +10x+25

 

 

 

 

 

 

 

 

 

 

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