Brightstorm is like having a personal tutor for every subject

See what all the buzz is about

Check it out

The Circle - Problem 6 429 views

In order to write the standard form equation for a circle, we need to know two things: the coordinates of the center and the length of the radius. Here we are provided with those things. The standard form equation is (x - h)^2 + (y - k)^2 = r^2 where the center is (h,k) and the radius is r. Be careful with + and - signs in the parentheses, and be sure to square r!

Transcript Coming Soon!