Here is some information about Stokenchurch Inc:

Beta of common stock $=1\mathrm{.}2$

Treasury bill rate $=4\%$

Market risk premium $=7\mathrm{.}5\%$

Yield to maturity on long$-$term debt $=6\%$

Book value of equity $=$$$440$ million

Market value of equity $=$$$880$ million

Long$-$term debt outstanding $($market value$)=$$$880$ million

Corporate tax rate $=35\%$

What is the company's WACC? $($Do not round intermediate colculations. Enter your answer as a percent rounded to $2$ decimal places.$)$

WACC

$\%$