How do I work this out?

Center at (5,-8) diameter of length 7.6

Question

How do I work this out?

Center at (5,-8) diameter of length 7.6

parthkohli · Answer

Equation of a circle?

anonymous · Answer

@ParthKohli do I just plug it in

terenzreignz · Answer

...great to be back...

nvm that ^

To answer your question, it's rather vague, certainly, you do plug in, but in what equation?

Can you state the general equation of a circle with a given centre and radius?

^_^

anonymous · Answer

Yes @terenzreignz and I already plugged it in.

terenzreignz · Answer

It's TJ
And if you did, that's great ^_^

What did you get for your answer?

anonymous · Answer

(x-5)^2+(y-8)^2=7.6

terenzreignz · Answer

Uhh, no  :|
I'd love to say 'good try' but unfortunately, in the world of Mathematics, an 'almost correct' answer does little better than a totally wrong one. 

No worries, though, here's the guide:

For any circle centred around a point $\large (\color{red}h,\color{green}k)$ with radius $\large \color{blue}r$, the equation of that circle is always given by:

$$\Large (x-\color{red}h)^2+(y-\color{green}k)^2= \color{blue}r^2$$

So it all boils down to your values for $\color{red}h$,$\color{green}k$, and $\color{blue}r$.

Speaking of which, what ARE they? 

^_^