Toyota Corp's stock is $25 per share. Its expected return is 24% and variance is 11%. Honda Corp's stock is $21 per share. Its expected return is 17% and variance is 6%. Benz Corp's stock is $45 per share. Its expected return is 14% and variance 7%. The covariance between Toyota and Honda is 0.03. What would be the standard deviation of a portfolio consisting of 50% Toyota and 50% Honda? Place your answer in decimal form, for example, as 0.14256 and not in percent form such as 14.256%.