The formula A=P(1+r)^2 gives the amount A in dollars that Pdollars will grow to

The formula A=P(1+r)^2 gives the amount A in dollars that Pdollars will grow to in 2 years at an interest rate r (where r isgiven as a decimal)using compound interest. What interest ratewill cause $6000 to grow to $6552.15 in 2 years?