Errata:in MicMac Example

There is an errata (typo) on page C-28 of book "Strength and Life of Composites", Example 13 on MicMac Shaft. The torque should be 0.05 MNm rather than 0.01MNm. Also answer is " weight of the [0/+-45]s laminate is 80% of that of [Pi/4]s laminate". Nevertheless, irrespective of the torque we choose, the answer holds true as it is a comparative study.