In early $2022,$ Meta Platforms had $$20\mathrm{.}47$ billion in debt, total equity capitalization of $$645$ billion, and an equity beta of $1\mathrm{.}34($as reported on Yahoo! Finance$).$ Included in Meta's assets was $$55$ billion in cash and risk$-$free securities$.$ Assume that Meta's debt beta is close to zero, the risk$-$free rate of interest is $2\mathrm{.}9\%$ and the market risk premium is $4\mathrm{.}1\%.$

a$.$ What is Meta's enterprise value?

b$.$ What is the beta of Meta's business assets?

c$.$ What is Meta's WACC?

Note: Round your intermediate computations to at least five $(5)$ decimal places.