The common stock of Buildwell Conservation & Construction Incorporated $($ BCCI has a beta of $0\mathrm{.}9.$ The Treasury bill rate is $4\%,$ and the market risk premium is estimated at $6\%.$ BCCl$\text{'}$s capital structure is $31\%$ debt, paying an interest rate of $6\%,$ and $69\%$ equity. The debt sells at par. Buildwell pays tax at $21\%.$

a$.$ What is BCCl$\text{'}$s cost of equity capital?

Note: Do not round intermediate calculations. Enter your answer as a percent rounded to $2$ decimal places.

b$.$ What is its WACC?

Note: Do not round intermediate calculations. Enter your answer as a percent rounded to $2$ decimal places.

c$.$ If $BCCl$ is presented with a normal project with an internal rate of return of $10\%,$ should it accept the project if it has the same level of risk as the current firm?

$\backslash$table$[[$a$.$ Cost of equity capital,$9\mathrm{.}40\%$