Kaitlin -Simply draw a sketch of your problem on paper. Draw a chord AB (see my picture) and the chord has length 60 as stated in the problem or half the chord AC is length 30, agree?Now draw a line from the center of the circle O to A. The length OA equals the radius of 34, agree?Triangle OAC is a right triangle and if you know the length of OA = 34 and AC = 30, so use the Pythagorean Theorem to solve for OC the distance the chord is from the center of the circle:(AC)^2 + (OC)^2 = (OA)^2Now just plug in the numbers and solve for OCHope this helps