please answer these questions. statements can be found online

9) 11% - Using Rolls Royce December 31,2021 financial statements, calculate the retum on assets for its power systems segment (Use the underlying operating profit (loss) figures). SHOW YOUR CALCULATIONS From its segment footnote, what tells you that Rolk Royce is using IFRS What is the accounting criteria under GAAP and IFRS to be reporied as an operating segment? 12) 6% - Look at Unilever's cash flow statement for period ending December 31,2021 What in the statement might lead you to think they are using GAAP? What in their statement might lead you to think they are using IFRS