Landon used a semicircle, a rectangle, and a right triangle to form the figure shown below .Which is the best estimate of the area of the figure in square centimeters

$12. that is my answer.

given the equation is 8+9z=-6, the first step would be to subtract the 8 from both sides:

8+9z-8=-6-8

since 8 minus 8 = 0, this would cancel out the 8. and since -6 minus 8 equals -14, the equation would look like this

9z = -14

pi or 3.14159265359 is an irratinal decimal