Triangle abc is congruent to triangle xyz. angle a measures 50 degrees, angle b measure 2x+40 degrees, and angle z measures 4x+8 degrees. find the value of x. 20.5 13.67 16 10.5

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.