Suppose a block with a mass of 3.00 x 10^5 kg is being lifted by a crane. The boom of the crane makes an angle of 45 degrees with the back round. If the axis of rotation is the lower end of the boom, the torque produced by the block has a magnitude of 3.20 x 10^7 NxM. Treat the boom's mass as negligible, and calculate the length of the boom.