## aroub 3 years ago c=π^2 r if c is directly proportional to r what's the constant? 2r? or r? or both maybe?

1. Mr.Math

c is directly proportional to r means $$c=kr$$, what do you think k is in this case?

2. aroub

k?

3. Mr.Math

Yeah, Just compare it to the formula you've written above! k=...?

4. aroub

Yes I know! but you have 'π^2' I think it's different right?

5. Mr.Math

Well, the constant in the formula you wrote is $$\pi^2$$. I don't know what you mean by "it's different".

6. Mr.Math

Nice picture by the way. :D

7. aroub

Okay, just forget about "it's different" :) Thanks for the help! lol! Thank you :D

8. Mr.Math

haha you're welcome.

9. lalaly

arouba fhemteh?

10. Mr.Math

Am I supposed to understand this?

11. lalaly

lol no :) ...

12. lalaly

its in arabic

13. Mr.Math

All right.

14. aroub

2a 6ab3an fihmet lol :P bas kint 3am 2ool yimken 3ashan fee 'π^2' bitkoon geir... bas ma 2azun sa7? :) 2aw 3al 2aqal heik bi2ool...

15. lalaly

la2 arouba btefre2esh ...bdalha el pi^2 constant

16. aroub

okay! shokraan :D

17. Mr.Math

Are you saying bad things about me? (someone is insecure :P)

18. lalaly

lool she said that the pi^2 confused her

19. aroub

Exactly! haha :) ( I'm still not sure of it I'm going to ask my teacher about it it's better :D )

20. lalaly

arouba habebte, pi 3ebara 3an raqm fa pi^2 kman raqam ... wel constant howe bekoon raqm mo variable... y3ni nafs mabd2 law hakete 2^2 aw 3^2 ...

21. aroub

Okay! pi^2 :D

22. lalaly

lol