Cornwell Industries stock has a beta of $1\mathrm{.}15.$ The company just paid a dividend of $$0\mathrm{.}63,$ and the dividends are expected to grow at $4\%.$The expected return on the market is $13\%,$ and Treasury bills are yielding $4\mathrm{.}7\%.$ The most recent stock price for the company is $$72.$a$.$ Calculate the cost of equity using the dividend growth model method. $($Do not round intermediate calculations. Round the final answer to $2$ decimal places.$)$Dividend growth model method$\%$b$.$ Calculate the cost of equity using the SML method. $($Do not round intermediate calculations. Round the final answer to $3$ decimal places.$)$SML method