blah

K d previous post is kinda emo i guess... fine it is == Well... dats d past (: So lets jz focus on d present and d future a.k.a exam =( Yea exams comin @_@ Guess wat, i reali dun understand a single thing in d syllabus -.- Speaking of it... i missed a whole bunch of classes... :X guess dats y i find it hard 2 ctach up O.o

Oh well... better work extra hard lo xD Anyw, i wrote dis post *or rather type-.-* 2 tell u guys dat History~z will be closing down 4 two week... due 2 nerding sessions *_* Haha... Bak 2 d buks =]

Prove dat i skipped classes:
Jeffrey says:
BOOO
yongquan l3e says:
elo
yongquan l3e says:
some1 teach me circles!!!!
yongquan l3e says:
AHHHHHHHH
Jeffrey says:
me!
yongquan l3e says:
i noe d formulas
yongquan l3e says:
but d twist and turn part i abit lost
yongquan l3e says:
;(
Jeffrey says:
Jeffrey says:
i teach u la
Jeffrey says:
simple oni
Jeffrey says:
wat question u dno
Jeffrey says:
as long u can draw nicely here
Jeffrey says:
i teach u
Jeffrey says:
yongquan l3e says:
errr
yongquan l3e says:
d sector angle part dat relates wif d area and radius/diameter
Jeffrey says:
?
Jeffrey says:
u mean find the sector area?
Jeffrey says:
sector area = pie r square divide by 360 X(angle)
Jeffrey says:
get it?
yongquan l3e says:
which is...
Jeffrey says:
ez oni
Jeffrey says:
u gime radius
Jeffrey says:
and angle
yongquan l3e says:
den d smtg over circumfrence = angle X over 360 is wat
Jeffrey says:
i show u the working
yongquan l3e says:
radius i think...
Jeffrey says:
u dun care out dat 1
Jeffrey says:
those formula gila 1
Jeffrey says:
u wan rmb those formula
yongquan l3e says:
k lets say
Jeffrey says:
rmb till ur hair turn white oso canot finish
Jeffrey says:
Jeffrey says:
understand the concept den done edi 1
Jeffrey says:
fast fast
Jeffrey says:
i teach u
Jeffrey says:
yongquan l3e says:
radius=12
area of major sector=220
find d minor sector angle
yongquan l3e says:
???
Jeffrey says:
ohh
Jeffrey says:
simple
yongquan l3e says:
i noe d value is abit wierd but yea...
yongquan l3e says:
how?
Jeffrey says:
1st
Jeffrey says:
360 degrees - 220 degrees to find the minor sector angle
Jeffrey says:
done
Jeffrey says:
yongquan l3e says:
itu area wor
Jeffrey says:
if u wan find the area of the minor sector different la
Jeffrey says:
up thr u put angle
Jeffrey says:
okok
yongquan l3e says:
area of d major sector wor
Jeffrey says:
so the minor sector angle is 140 degrees
yongquan l3e says:
mhm
Jeffrey says:
so
Jeffrey says:
22/7 X 12 square = A
Jeffrey says:
area of the whole piece la
Jeffrey says:
so area of the whole piece divide by 360 and multiply by 140 degrees
Jeffrey says:
den u got liao
yongquan l3e says:
so dat means area of circle over 360 times d angle given = ?
Jeffrey says:
yar
Jeffrey says:
but depends on which angle u want
yongquan l3e says:
wats d ?
Jeffrey says:
*draws a pic of circle and labels*
yongquan l3e says:
dis 1 is fond wart
yongquan l3e says:
find*
Jeffrey says:
ok la
Jeffrey says:
i make a simple question for u
Jeffrey says:
an area of a circle is 100
Jeffrey says:
find the sector of the circle which has an angle of 36 degrees
Jeffrey says:
so u take 100 divide by 360 times 36
Jeffrey says:
to get the answer of the sector
yongquan l3e says:
by sector u mean radius or wat....
Jeffrey writes:
Jeffrey says:
get it?
yongquan l3e says:
yea la i mean... sector u mean... d lenght or area of sector?
Jeffrey says:
area of sector
yongquan l3e says:
oh k
yongquan l3e says:
den errr
yongquan l3e says:
if arc leh
yongquan l3e says:
wats d formula
Jeffrey says:
length of arc?
Jeffrey says:
simple
Jeffrey says:
same thing actually
Jeffrey says:
u juz take area change wif circumference
Jeffrey says:
so circumference divide by 360 x (angle wanted)
yongquan l3e says:
O.o
yongquan l3e says:
icic
yongquan l3e says:
nth else rite...
yongquan l3e says:
is thr?
Jeffrey says:
no liao lo
Jeffrey says:
ehh
Jeffrey says:
chao 1st
Jeffrey says:
got to call sum1
yongquan l3e says:
kay
Jeffrey says:
bye
yongquan l3e says:
thx lox
yongquan l3e says:
bye
OMG man!!! I nid 2 catch up ;(
~ciao