8/11/2019 Mathematics CXC 2011

1/12

LIST OF FO U L E

Volumeof aprism

Volumeofcylinder

Volume

of

arightpy ramid

Circumference

Arc length

Area ofacircle

Area ofasector

Area of

trapezium

Rootsof quadraticequations

Trigonometricratios

Area of triangle

Sinerule

Cosineru le

Page2

v =

Ah whe

reA isthearea

of

across-sectionandh istheperpendicular

length.

v=n

rh

wherer istheradiusofthebaseandh istheperpendicularheight.

.

V = }Ah whereA is the a

rea

of thebase andh istheperpendicularheight.

C

=

2nr

wh ere

r

is theradi us

of

thecircle.

s

=

x

2nr where8 isthe anglesubtended bythearc,measuredin

360

degrees.

A = ttr where r isthe radiusofthecircle .

8

A =360 x

2

where

8 istheangle

of

the sector,measuredindegrees.

A

=

t a + b h wherea and b are the lengths

of

thepara llelsidesandh is

theperpendiculardistancebetweentheparallelside s.

I fax

2

+ bx + c = 0,

-b

.J

b

2

-

4ac

then x

= -

2a

sin

8 =

oppositeside

hypotenuse

Opposite

cos

8 =

adjacent side

hypotenuse Adjacent

tan8 = oppositeside

adjacent side

Area

of

II= 1bh whereb isthe length of theba seandh is

2

theperpendicu larheight

AreaofMBC

=

t ab sin C

r c a O

h

C

A

s

-a)

s

-b)

wheres

2