Question

1) Find the diameter of the circle (x - 4)2 + (y + 5)2 = 16.

Answer 1

Explanation:

The equation format of the circle is
`(x-x_(0) )^2 +(y-y_(0) )^2 = r ^2`

In this case, r is the radius and
`r^(2)` is equal to 16

Thus the radius is 4. The diameter is double the radius so the diameter is 8