Question

In the equation (x+2)2+(y-3)2=4, the diameter of the circle is...

16
4
3
2

Answer 1

4

Explanation:

The given equation of circle is:

`(x+2)^2 +(y-3)^2 =4`

`(x+2)^2 +(y-3)^2 =2^2`

Equating it with:

`(x-h)^2 +(y-k)^2 =r^2`

We find:

`r^2=2^2`

`\therefore r=2`

Radius of the circle = 2 units

Therefore,

Diameter of the circle = 2*2= 4 units