$($Individual or component costs of capital$)$ Compute the cost of capital for the firm for the following

a$.$ A bond that has a $$1,000$ par value $($face value$)$ and a contract or coupon interest rate of $11\mathrm{.}0$ percent. Interest payments are $$55\mathrm{.}00$ and are paid semiannually. The bonds have a current market value of $$1,125$ and will mature in $10$ years. The firm's marginal tax rate is $34$ percet

b$.$ A new common stock issue that paid a $$1\mathrm{.}80$ dividend last year. The firm's dividends are expected to continue to grow at $7\mathrm{.}0$ percent per year, forever. The price of the firm's common stock is now $$27\mathrm{.}50.$

c$.$ A preferred stock that sells for $$125,$ pays a dividend of $9\mathrm{.}0$ percent, and has a $$100$ par value

d$.$ A bond selling to yield $12\mathrm{.}0$ percent where the firm's tax rate is $34$ percent

a$.$ The after$-$tax cost of debt is $\%.($Round to two decimal places.$)$