Toyota Corp's stock is $$28$ per share. Its expected return is $25\%$ and variance is $14\%.$ Honda Corp's stock is $$20$ per share. Its expected return is $19\%$ and variance is $8\%.$ Benz Corp's

stock is $$45$ per share. Its expected return is $14\%$ and variance $6\%.$ The covariance between Toyota and Honda is $0\mathrm{.}03.$ 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 $0\mathrm{.}14256$ and not in percent form such as $14\mathrm{.}256\%.$