In early$2022,$ Meta Platforms had $$$$15\mathrm{.}41$ billion in$$ debt, total equity capitalization of $$$$611$billion$,$ and an equity beta of $1\mathrm{.}32($as reported on$$ Yahoo! Finance$).$ Meta's debt beta is close to zero. Assume that the$$ risk$-$free rate of interest is $2\mathrm{.}9\%$ and the market risk premium is$3\mathrm{.}9\%.$

a$.$ What is the beta of Meta's business assets$($unlevered beta$)?$

b$.$ What is Meta's $$WACC$?$