My Fairytale Fantasy

mY |iFE

update:



argh!!! so many formula to learn... ppl say maths dun need study... as if... so many formulas!!!



Rectangle:

Perimeter: 2(L x B)

Area: L x B



Square:

Perimeter: 4 x L

Area: L x L



Triangle:

Perimeter: add up all sides e.g. a + b + c

Area: ½bh



Circle:

Perimeter: πd or 2πr

Area: πr²



Parallelogram:

Area: bh



Trapezium:

Area: ½(a+b)h



Volume of cuboid:

L x W x H



Volume of prism:

c.s x height

Surface area of prism:

Perimeter of base x height + (2 x c.s)



Volume of cylinder:

πr²h

Volume of hollow cylinder:

πR²h - πr²h

Surface area of closed cylinder:

2πrh + 2πr²

Surface area of open cylinder:

2πrh + πr²



haha!!!



all the stupid formulas which are driving me crazy...

gotta get back to studies!!! cyaz...