Question

How can i do this ?

Answer 1

The standart form for the equation of a circle is:


`(x-a)^2+(y-b)=r^2`

Where
`(a,b)` is the center of a circle and r is the radius.

So, in our case:


`a=3, b=5, r^2=25\Rightarrow a=3,b=5,r=5`


`(3,5)` is the center. And
`r=5` is the radius.