Anthony is going to invest $7,200 and leave it in an account for 16 years. Assuming the interest is compounded monthly, what interest rate, to the nearest tenth of a
percent, would be required in order for Anthony to end up with $15,200?

A3cm×3cm\greend{3\,\text{cm} \times 3\,\text{cm}} 3cm×3cm start color greend, 3, space, c, m, times, 3, space, c, m, end color greend rectangle sits inside a circle with radius of 4cm\blued{4\,\text{cm}} 4cm start color blued, 4, space, c, m, end color blued . what is the area of the shaded region? round your final answer to the nearest hundredth.