What is the equation of a circle with radius 4 and center (0,8)?

Question

asked Feb 13, 2022 88.5k views

1 Answer

TVA Van Hesteren · Answer 1 · 2022-02-20T02:59:40+0000

The equation of circle with the center at (h,k) is:

$\large \boxed{ {(x - h)}^(2) + {(y - k)}^(2) = {r}^(2) }$

r stands for radius. Therefore r^2 = diameter or 2×radius.

The question has already given the information we need, which are:

Since the center is (h,k) - therefore the center is at h = 0 and k = 8 making it (h,k) = (0,8).

Substitute the values in the equation:

$\large{ {(x - 0)}^(2) + {(y - 8)}^(2) = {4}^(2) }$

Simplify to the simplest form

$\large \boxed{ {x}^(2) + {(y - 8)}^(2) = 16} \: \: \: \: \huge{ \green{\checkmark}}$

Answer