IDENTIFYING PROPERTIES Identify the property being illustrated. 26. -3 + 3 = 0

27. (-6 + 1) + 7 = -6+ (1+7)

28. 9 + (-1) = -1 + 9

29. -8+0= -8

30. (x + 2) + 3 = X + (2+3)

31. y + (-4) = -4 + y

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.