Asalesperson works 40 hours per week at a job where she has two options for being paid. option a is an hourly wage of $22. option b is a commission rate of 4% on weekly sales. how much does she need to sell this week two are the same amount with the two options?

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.