Integrate (x, y, z) = x 2 + y 2 over the involute curve r(t) = (cos t + t sin t)i + (sin t

Integrate ƒ(x, y, z) = √x² + y² over the involute curve r(t) = (cos t + t sin t)i + (sin t - t cos t)j, 0 ≤ t ≤ √3.