3. Suppose a thin wire lies along the semi-circle given by r (t) = (cost, 0, sint), > > 0, and has a mass density of o(I, y, z) = 2 - z kg/m . Find the total mass by following these steps from lecture 1. Parametrizationeady done). What are the bounds on t? 2. Compute o(T(t)). 3. Compute ||7 ' (t) |1. 4. Compute the mass via / ads