Question

Find the equation of the circle whose center and radius are given. center (0, 8), radius = 8

Answer 1

well, the equation of a circle is
`\bf (x-{{ h}})^2+(y-{{ k}})^2={{ r}}^2 \qquad center\ ({{ h}},{{ k}})\qquad radius={{ r}}`

notice, you're given the h,k and "r" values, so..just plug them in