Convert the line integral to an ordinary integral with respect to the parameter and evaluate it. integral_c(x + y + z)ds; c is the part of the circle r(t) = (12 cos t, 0, 12 sin t). for 0 lessthanorequalto t lessthanorequalto 3 pi/2 the value of the ordinary integral is (type an exact answer, using radicals as needed)