Please, help me solve this using Excel Spreadsheet, and also showing the appropriate formula and Cell References. Thank you.

Stock A has an expected return of 12% and a standard deviation of 40%. Stock B has an expected return of 18% and a standard deviation of 60%. The correlation coefficient between Stocks A and B is 0.2 . What are the expected return and standard deviation of a portfolio invested 30% in Stock A and 70% in Stock B