Yesterday this happened in my Form 4 Add Math class.

Towards the end of the class (2 hours)

Student 1 : Ei, how many questions did you do today?

Student 2 : Err.. let’s see…. 6.

Student 1 : I also did 6 questions today.

Student 2 : My questions are more complicated.

Student 1 : Mine also SPM Questions what..

Student 2 : Oh yeah? Look at this question man. Bet with you 100 bucks, you sit for 1 year also can’t figure it out!

Student 1 : Ceh!…

Now – that was very funny. I was laughing away at their conversation.. Student 2 is a hardworking and smart boy. Student 1 is generally lazier and puts in much lesser effort than Student 2.. so it’s his way of saying.. “Hey man.. Tho I’m lazy, I can do as many Add Math questions as you in 2 hours.”

But the truth is – Student 2 was doing a much harder paper.

So – I’m curious as to how many students especially the members of this website, can answer the question that he bet ” the other student sit for 1 year also can’t figure out”

Here’s the question:

**The first student who puts in the correct answer in the comment form below will get a ****very very special prize!**

He/she will be given** free membership** to my Online Tuition website for 1 month! Unlimited access to all the video tutorials and Worksheet. PS : – this question is taken from the Worksheet there.

However – you must be a Form 4 or Form 5 student. I require full details (full name & IC, school name, Hse address and contact details from the winner).

Once someone post up the correct answer, I will put up the video tutorial for everyone.

Enjoy!

**UPDATE** : The Video Tutorial is here.

**PS : – If you feel that this is helpful, please help to share this with your friends. Just click on the “Share on Facebook” link below**

Miss Ng,

i tried.. and i got the length of OC is 5.73cm..

is it?

just trying

gaahh~ i tried one more time and i got 1.63 cm…

haha..

can’t wait for someone to post correct answer and u’ll post the tutorial. xD

*1.636cm

Hi!The length of OC is equal the length of radius.

Answer: Length of OC = 7.168cm

i noticed my mistakes earlier (i messed up the formula for circumference and area). so i came up with another answer. 😛

my third answer, n i hope this is final, some PLEASE post the correct one, i wanna know the answer and how to get it. HAHA.

5.727 cm

Hi charger,

Keep it up… keep it up! Actually the answer has been given by funmaths.. it is 7.168cm.

However, funmaths is actually not in Form 4/5 now. He’s older so he’s not supposed to answer this.

Therefore, I don’t have anyone to give the prize to…

I’ll put up other challenges another time.

I am so sorry Ms.Ng..=/..but in my opinion, they have the answer doesn’t mean they can solve it..perhaps they can attached their solutions…I am still finding for a good solution too…=)

ya, i didnt use any of the add math formula, i just used math mode, there must be some where i missed out. anyway, looking forward for the video tutorial!

The key is to use Cos sin or tan.