Multiple choice What is the distance between the two points with coordinates ( 1, 2, 3) & ( 3, 5, -3) ? -1 1 7 11 Reveal answer Fill a bubble to check yourself C Correct answer Explanation The distance formula in 3D is sqrt((x2-x1)^2 + (y2-y1)^2 + (z2-z1)^2). Plugging in the points: sqrt((3-1)^2 + (5-2)^2 + (-3-3)^2) = sqrt(2^2 + 3^2 + (-6)^2) = sqrt(4 + 9 + 36) = sqrt(49) = 7.