individual or component costs of​ capital) your firm is considering a new investment proposal and would like to calculate its weighted average cost of capital. to help in​ this, compute the cost of capital for the firm for the​ following: a. a bond that has a ​$ par value​ (face value) and a contract or coupon interest rate of percent that is paid semiannually. the bond is currently selling for a price of ​$ and will mature in years. the​ firm's tax rate is percent. b. if the​ firm's bonds are not frequently​ traded, how would you go about determining a cost of debt for this​ company? c. a new common stock issue that paid a ​$ dividend last year. the par value of the stock is ​$​, and the​ firm's dividends per share have grown at a rate of percent per year. this growth rate is expected to continue into the foreseeable future. the price of this stock is now ​$. d. a preferred stock paying a percent dividend on a ​$ par value. the preferred shares are currently selling for . e. a bond selling to yield percent for the purchaser of the bond. the borrowing firm faces a tax rate of percent.