Area and perimeter
Area of the Circle
pi * r * r
pi=3.14
r= radius
Area of triangle
(b * h) / 2
b = base
h = height
Area of Square
a * a
a= side
Area of Rectangle
l * b
l=length
b=breadth
Area of Parallelogram
b * h
b = base
h = vertical height
Area of Trapezium
( (a+b) / 2) * h
h = vertical height
a,b=length of side
Area of ellipse
pi * a * b
pi= 3.14
a= radius on x axis
b= radius on y axis
Perimeter of Square
4 * a
a= side
Perimeter of Rectangle
2 * ( l+b )
l=length
b=breadth
Perimeter of Triangle
a + b + c
a,b,c are sides
Perimeter of Parallelogram
2 * (w+h)
w is the base length of the parallelogram
h is the side length
Perimeter of Trapezium
a + b + c + d
a, b, c, d = sides
Volume of cube
a * a * a
a= side
Volume of Cylinder
pi * r * r * h
pi= 3.14
r= radius
h=height
Volume of Cone
(pi * r * r * h) / 3
pi= 3.14
r=radius
h=height
Volume of Sphere
( 4 * pi * r * r * r) / 3
pi=3.14
r=radius
Surface area of Sphere
(4 * pi * r * r)
pi=3.14
r=radius
Surface area of cone
pi * r * s + pi *r *r
Pi * r * r = area of base
pi * r * s = area of cone
pi=3.14
r=radius
s=slanth height
Surface area of Cylinder
2 * pi * r * r + 2 * pi * r * h
area of top and bottom is pi * r * r
area of side is 2 * pi * r * h
Surface area of cuboid
2 * ( w*l + l*h + h*w)
w=width
l=length
h=heigth
Surface area of cube
6 * a * a
a=side