CP=SP*100/(100+profit%)

CP= SP*100/(100-LOSS%)

SP=(CP*(100+PROFIT%))/100

SI= P*N*R/(100)

area of a rhombus

perimeter of rhombus= 4a= 4(sqrt((d1/2)^2+(d2/2)^2) where d1 & d2 are diagonals


volume of a cuboid=length * breadth* height

surface area of cuboid= 2wl+2lh+2hw

volume of cube= length*length(width)*length(height) , when 3 are same

surface area of a cube=6L^3

curved surface area of a cylinder=2*22/7*h*r

volume of cylinder = 22/7*r*r*h

volume of cone=1/3*22/7*r^2*h

curved surface area of cone= 22/7*r*l  where l=sqrt(r^2+h^2)

Costprice = (markedprice * (100-discount))/(100+p%)

http://math.com/tables/index.html

The earth makes a complete revolution about its axis in 24 hours. The angle through which it will turn in 4 hours 40 mins?
Ans: 4+(40/60)= 14/3

14/3*(360/24)= 70 degrees

if the measurement of interior angles of a polygon is 160 degrees. tell the no. of sides of it.

Ans: (n-2)*180/(n)=160
n=18


2mean=3median-mode

radius of in circle= area of polygon/half the perimeter