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# Maths - Rate of Change watch

1. Hey

Could anyone help me on this question... Question 3 Btw

I have some idea where to start but i need an exemplar answer

ive attached the file

Quote me

Ryan
Attached Images

2. Can't see a file.
3. (Original post by ryanb97)
Hey

Could anyone help me on this question... Question 3 Btw

I have some idea where to start but i need an exemplar answer

ive attached the file

Ryan
Hey Ryan, I don't see an attachment.
4. Sorry i couldn't either ive attached it now

(Original post by Brister)
....

(Original post by L'Evil Fish)
...
Attached Images

5. (Original post by ryanb97)
Hey

Could anyone help me on this question... Question 3 Btw

I have some idea where to start but i need an exemplar answer

ive attached the file

Ryan
I assume that you know the formulae for volume and surface area of a sphere. The only variable that each quantity depends on is , so when you do you can find - which will depend on and the constant given in the question - and use that to calculate .
6. Ok we have and we want .

You should know what the volume and surface area of a sphere is. Can you work it out now?
7. (Original post by Brister)
I assume that you know the formulae for volume and surface area of a sphere. The only variable that each quantity depends on is , so when you do you can find - which will depend on and the constant given in the question - and use that to calculate .

(Original post by Joshmeid)
Ok we have and we want .

You should know what the volume and surface area of a sphere is. Can you work it out now?

I think i know how to do it now

i just forgot the type of question it was lol

Ill quote if i need help
thanks
8. Got it

thanks

ryan

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